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Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA i
Regional Level Types
Hunting Hill Quarry Quarry (Active)
Rockville City
Montgomery County County
Maryland State
USA Country

Regional Level Types
Hunting Hill Quarry	Quarry (Active)
Rockville	City
Montgomery County	County
Maryland	State
USA	Country

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Hunting Hill Quarry Upper Section

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Hunting Hill Quarry Upper Section

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Exposed Rock Along Road to Second Section

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Hunting Hill Quarry Upper Section

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Hunting Hill Quarry Upper Section

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Exposed Rock Along Road to Second Section

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Hunting Hill Quarry Upper Section

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Hunting Hill Quarry Upper Section

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Latitude & Longitude (WGS84):

39° 4' 43'' North , 77° 13' 34'' West

Latitude & Longitude (decimal):

G#: dqcn6dj99

Type:

Quarry (Active) - last checked 2013

Köppen climate type:

Cfa : Humid subtropical climate

Nearest Settlements:

Place	Population	Distance
Travilah	12,159 (2011)	3.3km
North Potomac	24,410 (2011)	3.4km
Darnestown	6,802 (2011)	6.2km
Rockville	66,980 (2017)	6.4km
Potomac	44,965 (2011)	6.9km

Nearest Clubs:
Local clubs are the best way to get access to collecting localities

Club	Location	Distance
Gem, Lapidary, and Mineral Society of Montgomery County, MD., Inc.	Rockville, Maryland	6km
Northern Virginia Mineral Club, Inc.	Arlington, Virginia	24km
Southern Maryland Rock and Mineral Club	Clinton, Maryland	45km
American Fossil Federation	Bowie, Maryland	45km
Maryland Geological Society	Bowie, Maryland	45km

Mindat Locality ID:

5755

Long-form identifier:

mindat:1:2:5755:7

GUID (UUID V4):

34a8a441-d5ec-41b0-9425-07a50427b72d

Other/historical names associated with this locality:

Rockville Crushed Stone Quarry; Travilah Quarry; Rockville Quarry; Bardon Stone Quarry; Aggregate Industries Quarry

A large active quarry (as of December, 2013) in the Ordovician-age Hunting Hill pluton. The pluton in the quarry is thought to be originally a dunite, now largely serpentinized. Gabbro dikes cutting the serpentinite have been converting via metasomatism to rodingite, a mixture of calcium-rich clinopyroxene (here a green chromium-rich diopside) and a pink to white grossular garnet. Shearing along the contacts between the more resistant rodingite and the weaker serpentinite as well as within the rodingite has provided space for veins and open-space fillings of a suite of bizarre often well-crystallized minerals.

Over 60 minerals have been reported so far from the quarry, according to the excellent article by Parker. Notable finds are red gemmy grossular crystals, coalingite masses, desautelsite, prehnite crystals, mcguinnessite and calcite crystals.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

ⓘ Aggregates

Mineral List

ⓘ var. Chromium-bearing Diopside

ⓘ 'Fayalite-Forsterite Series'

ⓘ 'Grossular-Hibschite Series'

ⓘ Hematite

ⓘ 'Heulandite Subgroup'

ⓘ Magnesio-hornblende

ⓘ 'var. Manganese Dendrites'

ⓘ 'Serpentine Subgroup'

68 valid minerals.

Detailed Mineral List:

ⓘ Actinolite

Formula: ◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂

Description: ACTINOLITE. ALBITE. (Reported by J. Griesbach, 1975). ANTHOPHYLLITE. Creamy gray veinlets in serpentinite float. ANTIGORITE. (G. T. Faust, 1967). Constitutes bulk of serpentinite as interlocking microscopic laths and plates or as tough, brittle, dark

References:

Jack Nelson, Compiler from two references and personal communications, May 2000 (See descriptive notes for quarry for reference citations)>

ⓘ Albite

Formula: Na(AlSi₃O₈)

References:

Betts, John (n.d.) John Betts website listing.

ⓘ Anthophyllite

Formula: ◻{Mg₂}{Mg₅}(Si₈O₂₂)(OH)₂

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Antigorite

Formula: Mg₃(Si₂O₅)(OH)₄

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Aragonite

Formula: CaCO₃

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Azurite

Formula: Cu₃(CO₃)₂(OH)₂

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ 'Biotite' ?

Formula: K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Bornite

Formula: Cu₅FeS₄

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ Brochantite

Formula: Cu₄(SO₄)(OH)₆

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Brucite

Formula: Mg(OH)₂

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Calcite

Formula: CaCO₃

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ 'Chabazite'

References:

Parker, F. (2014) Fred Parker Updates his 2005 Hunting Hill Mineralogical Record Article: Mineral Bliss website, http://mineralbliss.blogspot.com/2014/01/fred-parker-updates-his-2005-hunting.html.

ⓘ Chalcocite

Formula: Cu₂S

References:

Jack Nelson, Compiler from two references and personal communications, May 2000 (See descriptive notes for quarry for reference citations)>

ⓘ Chalcopyrite

Formula: CuFeS₂

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Chromite

Formula: Fe²⁺Cr³⁺₂O₄

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Chrysocolla ?

Formula: Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Chrysotile

Formula: Mg₃(Si₂O₅)(OH)₄

References:

'Serpentinite and Rodingite in the Hunting Hill Quarry, Montgomery County, Maryland', Geological Survey Bulletin 1283, p.20

"Clinochrysotile forms veins 1/8 to 2 inches thick in serpentinite

the

largest vein strikes N. 50° W. and dips '25° NE. The mineral is ex-

tremely fine grained, pale grayish green to bluish green, massive,

waxy, and has an unctuous feel

it is hard and breaks with a conchoi-

dal fracture. The outer surfaces or contacts of the thickest vein are

mammillary or botryoidal

the clinochrysotile is bordered with calcite

and dolomite. According to Norman Page (oral commun., 1967), the

clinochrysotile probably formed well below 100° C., perhaps below

50° C. It appears to be the last serpentine mineral formed. Hostetler

erals probably are formed at temperatures below 100° C."

and Christ (1968) indicated that chrysotile and other serpentine min-

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Clinochlore

Formula: Mg₅Al(AlSi₃O₁₀)(OH)₈

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ 'Clinochrysotile'

References:

'Serpentinite and Rodingite in the Hunting Hill Quarry, Montgomery County, Maryland', Geological Survey Bulletin 1283, p.20

"Clinochrysotile forms veins 1/8 to 2 inches thick in serpentinite

the

largest vein strikes N. 50° W. and dips '25° NE. The mineral is ex-

tremely fine grained, pale grayish green to bluish green, massive,

waxy, and has an unctuous feel

it is hard and breaks with a conchoi-

dal fracture. The outer surfaces or contacts of the thickest vein are

mammillary or botryoidal

the clinochrysotile is bordered with calcite

and dolomite. According to Norman Page (oral commun., 1967), the

clinochrysotile probably formed well below 100° C., perhaps below

50° C. It appears to be the last serpentine mineral formed. Hostetler

erals probably are formed at temperatures below 100° C."

and Christ (1968) indicated that chrysotile and other serpentine min-

ⓘ Clinozoisite

Formula: (CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Coalingite

Formula: Mg₁₀Fe³⁺₂(OH)₂₄[CO₃] · 2H₂O

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Desautelsite

Formula: Mg₆Mn³⁺₂(OH)₁₆[CO₃] · 4H₂O

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ 'Deweylite'

Formula: Mg₄Si₃O₁₀ · 6H₂O ?

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ Diopside

Formula: CaMgSi₂O₆

References:

Jack Nelson, Compiler from two references and personal communications, May 2000 (See descriptive notes for quarry for reference citations)>

ⓘ Diopside var. Chromium-bearing Diopside

Formula: Ca(Mg,Cr)Si₂O₆

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ Dolomite

Formula: CaMg(CO₃)₂

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Dravite

Formula: NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ Epidote

Formula: (CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Erythrite

Formula: Co₃(AsO₄)₂ · 8H₂O

References:

ⓘ 'Fayalite-Forsterite Series'

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Fluorapatite

Formula: Ca₅(PO₄)₃F

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ Galena

Formula: PbS

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ Goethite

Formula: α-Fe³⁺O(OH)

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ Grossular

Formula: Ca₃Al₂(SiO₄)₃

References:

Betts, John (n.d.) John Betts website listing.

ⓘ 'Grossular-Hibschite Series'

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Hematite

Formula: Fe₂O₃

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ 'Heulandite Subgroup'

Formula: (Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O

References:

ⓘ Huntite

Formula: CaMg₃(CO₃)₄

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Hydromagnesite

Formula: Mg₅(CO₃)₄(OH)₂ · 4H₂O

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Ilmenite

Formula: Fe²⁺TiO₃

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ Laumontite

Formula: CaAl₂Si₄O₁₂ · 4H₂O

References:

ⓘ 'Limonite'

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Lizardite

Formula: Mg₃(Si₂O₅)(OH)₄

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Magnesio-hornblende

Formula: ◻Ca₂(Mg₄Al)(Si₇Al)O₂₂(OH)₂

References:

Jonathan Harris Collection

ⓘ Magnesite

Formula: MgCO₃

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Malachite

Formula: Cu₂(CO₃)(OH)₂

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ 'Manganese Oxides'

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ 'Manganese Oxides var. Manganese Dendrites'

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ Margarite

Formula: CaAl₂(Al₂Si₂O₁₀)(OH)₂

References:

ⓘ Mcguinnessite

Formula: (Mg,Cu)₂(CO₃)(OH)₂

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ Mesolite

Formula: Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O

References:

ⓘ Millerite

Formula: NiS

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ Molybdenite

Formula: MoS₂

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ Muscovite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

References:

Luetcke, Rolf (n.d.) Personal communication.

ⓘ Nacrite

Formula: Al₂(Si₂O₅)(OH)₄

References:

ⓘ Nimite

Formula: (Ni,Mg,Al)₆((Si,Al)₄O₁₀)(OH)₈

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ Omphacite

Formula: (Na_aCa_bFe²⁺_cMg_d)(Al_eFe³⁺_fFe²⁺_gMg_h)Si₂O₆

References:

David Schoeberlein Collection

ⓘ Opal

Formula: SiO₂ · nH₂O

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Palladium ?

Formula: (Pd,Pt)

Description: Traces reported by David Marcel Larrabee (1969) (No evidence presented that the native element mineral is present.)

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Pargasite

Formula: NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ Pecoraite

Formula: Ni₃(Si₂O₅)(OH)₄

References:

ⓘ Pentlandite

Formula: (Ni_xFe_y)_Σ9S₈

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

Description: Analysed by Bart Cannon; see http://www.mindat.org/mesg-5-40618.html

References:

Jon Ertman collection

ⓘ Platinum ?

Formula: Pt

Description: Traces reported by David Marcel Larrabee (1969) (No evidence presented that the native element mineral is present.)

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Pokrovskite

Formula: Mg₂(CO₃)(OH)₂

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ Prehnite

Formula: Ca₂Al₂Si₃O₁₀(OH)₂

References:

Rocks & Minerals: 61: 347.

Bernstein, Lawrence R. (1980) Minerals of the Washington, D. C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Pyrite

Formula: FeS₂

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D. C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Pyrrhotite

Formula: Fe_1-xS

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D. C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Quartz

Formula: SiO₂

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D. C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Quartz var. Chalcedony

Formula: SiO₂

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D. C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Rutile

Formula: TiO₂

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ Scolecite

Formula: CaAl₂Si₃O₁₀ · 3H₂O

References:

ⓘ 'Serpentine Subgroup'

Formula: D₃[Si₂O₅](OH)₄

References:

Luetcke, Rolf (n.d.) Personal communication.

ⓘ Stellerite

Formula: Ca₄(Si₂₈Al₈)O₇₂ · 28H₂O

References:

ⓘ Talc

Formula: Mg₃Si₄O₁₀(OH)₂

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D. C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Titanite

Formula: CaTi(SiO₄)O

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ Tochilinite

Formula: Fe²⁺_5-6(Mg,Fe²⁺)₅S₆(OH)₁₀

References:

Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

ⓘ 'Tourmaline'

Formula: AD₃G₆ (T₆O₁₈)(BO₃)₃X₃Z

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D. C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Tremolite

Formula: ◻Ca₂Mg₅(Si₈O₂₂)(OH)₂

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D. C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Vesuvianite

Formula: Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D. C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Xonotlite

Formula: Ca₆(Si₆O₁₇)(OH)₂

References:

Scovil, Jeffrey A. (1999) What's New in Minerals - Rochester Mineralogical Symposium 1999. The Mineralogical Record, 30 (6) 467pp.467-467

ⓘ Zoisite

Formula: (CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)

References:

Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.

ⓘ Zoisite var. Thulite

Formula: {Ca₂}{Al,Mn³⁺₃}(Si₂O₇)(SiO₄)O(OH)

References:

Jack Nelson, Compiler from two references and personal communications, May 2000 (See descriptive notes for quarry for reference citations)>

Gallery:

CaCO₃ⓘ Aragonite

Aragonite, etc.

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Aragonite, etc.

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Aragonite, etc.

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Ca(Mg,Cr)Si₂O₆ⓘ Diopside var. Chromium-bearing Diopside

Chromium-bearing Diopside, etc.

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Chromium-bearing Diopside, etc.

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Chromium-bearing Diopside, etc.

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Mg₃(Si₂O₅)(OH)₄ⓘ Lizardite

Lizardite

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Lizardite

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Lizardite

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Fe²⁺_5-6(Mg,Fe²⁺)₅S₆(OH)₁₀ⓘ Tochilinite

Tochilinite

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Tochilinite

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Tochilinite

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

◻Ca₂Mg₅(Si₈O₂₂)(OH)₂ⓘ Tremolite

Tremolite

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Tremolite

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

Tremolite

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Platinum ?	1.AF.10	Pt
ⓘ	Palladium ?	1.AF.10	(Pd,Pt)
Group 2 - Sulphides and Sulfosalts
ⓘ	Chalcocite	2.BA.05	Cu₂S
ⓘ	Bornite	2.BA.15	Cu₅FeS₄
ⓘ	Pentlandite	2.BB.15	(Ni_xFe_y)_Σ9S₈
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Pyrrhotite	2.CC.10	Fe_1-xS
ⓘ	Millerite	2.CC.20	NiS
ⓘ	Galena	2.CD.10	PbS
ⓘ	Molybdenite	2.EA.30	MoS₂
ⓘ	Pyrite	2.EB.05a	FeS₂
ⓘ	Tochilinite	2.FD.35	Fe²⁺_5-6(Mg,Fe²⁺)₅S₆(OH)₁₀
Group 4 - Oxides and Hydroxides
ⓘ	Goethite	4.00.	α-Fe³⁺O(OH)
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	Chromite	4.BB.05	Fe²⁺Cr³⁺₂O₄
ⓘ	Ilmenite	4.CB.05	Fe²⁺TiO₃
ⓘ	Hematite	4.CB.05	Fe₂O₃
ⓘ	Quartz var. Chalcedony	4.DA.05	SiO₂
ⓘ		4.DA.05	SiO₂
ⓘ	Opal	4.DA.10	SiO₂ · nH₂O
ⓘ	Rutile	4.DB.05	TiO₂
ⓘ	Brucite	4.FE.05	Mg(OH)₂
Group 5 - Nitrates and Carbonates
ⓘ	Magnesite	5.AB.05	MgCO₃
ⓘ	Calcite	5.AB.05	CaCO₃
ⓘ	Dolomite	5.AB.10	CaMg(CO₃)₂
ⓘ	Aragonite	5.AB.15	CaCO₃
ⓘ	Huntite	5.AB.25	CaMg₃(CO₃)₄
ⓘ	Azurite	5.BA.05	Cu₃(CO₃)₂(OH)₂
ⓘ	Mcguinnessite	5.BA.10	(Mg,Cu)₂(CO₃)(OH)₂
ⓘ	Malachite	5.BA.10	Cu₂(CO₃)(OH)₂
ⓘ	Pokrovskite	5.BA.10	Mg₂(CO₃)(OH)₂
ⓘ	Hydromagnesite	5.DA.05	Mg₅(CO₃)₄(OH)₂ · 4H₂O
ⓘ	Desautelsite	5.DA.50	Mg₆Mn³⁺₂(OH)₁₆[CO₃] · 4H₂O
ⓘ	Coalingite	5.DA.55	Mg₁₀Fe³⁺₂(OH)₂₄[CO₃] · 2H₂O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Brochantite	7.BB.25	Cu₄(SO₄)(OH)₆
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Fluorapatite	8.BN.05	Ca₅(PO₄)₃F
ⓘ	Erythrite	8.CE.40	Co₃(AsO₄)₂ · 8H₂O
Group 9 - Silicates
ⓘ	Chrysotile	9..	Mg₃(Si₂O₅)(OH)₄
ⓘ	Grossular	9.AD.25	Ca₃Al₂(SiO₄)₃
ⓘ	Titanite	9.AG.15	CaTi(SiO₄)O
ⓘ	Clinozoisite	9.BG.05a	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
ⓘ	Epidote	9.BG.05a	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
ⓘ	Zoisite var. Thulite	9.BG.10	{Ca₂}{Al,Mn³⁺₃}(Si₂O₇)(SiO₄)O(OH)
ⓘ		9.BG.10	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
ⓘ	Vesuvianite	9.BG.35	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉
ⓘ	Dravite	9.CK.05	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
ⓘ	Diopside var. Chromium-bearing Diopside	9.DA.15	Ca(Mg,Cr)Si₂O₆
ⓘ		9.DA.15	CaMgSi₂O₆
ⓘ	Omphacite	9.DA.20	(Na_aCa_bFe²⁺_cMg_d)(Al_eFe³⁺_fFe²⁺_gMg_h)Si₂O₆
ⓘ	Anthophyllite	9.DD.05	◻{Mg₂}{Mg₅}(Si₈O₂₂)(OH)₂
ⓘ	Tremolite	9.DE.10	◻Ca₂Mg₅(Si₈O₂₂)(OH)₂
ⓘ	Actinolite	9.DE.10	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
ⓘ	Magnesio-hornblende	9.DE.10	◻Ca₂(Mg₄Al)(Si₇Al)O₂₂(OH)₂
ⓘ	Pargasite	9.DE.15	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂
ⓘ	Xonotlite	9.DG.35	Ca₆(Si₆O₁₇)(OH)₂
ⓘ	Prehnite	9.DP.20	Ca₂Al₂Si₃O₁₀(OH)₂
ⓘ	Talc	9.EC.05	Mg₃Si₄O₁₀(OH)₂
ⓘ	Muscovite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	Margarite	9.EC.30	CaAl₂(Al₂Si₂O₁₀)(OH)₂
ⓘ	Nimite	9.EC.55	(Ni,Mg,Al)₆((Si,Al)₄O₁₀)(OH)₈
ⓘ	Clinochlore	9.EC.55	Mg₅Al(AlSi₃O₁₀)(OH)₈
ⓘ	'Clinochrysotile'	9.ED.
ⓘ	Nacrite	9.ED.05	Al₂(Si₂O₅)(OH)₄
ⓘ	Antigorite	9.ED.15	Mg₃(Si₂O₅)(OH)₄
ⓘ	Pecoraite	9.ED.15	Ni₃(Si₂O₅)(OH)₄
ⓘ	Lizardite	9.ED.15	Mg₃(Si₂O₅)(OH)₄
ⓘ	Chrysocolla ?	9.ED.20	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
ⓘ	Scolecite	9.GA.05	CaAl₂Si₃O₁₀ · 3H₂O
ⓘ	Mesolite	9.GA.05	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
ⓘ	Laumontite	9.GB.10	CaAl₂Si₄O₁₂ · 4H₂O
ⓘ	Stellerite	9.GE.15	Ca₄(Si₂₈Al₈)O₇₂ · 28H₂O
Unclassified
ⓘ	'Deweylite'	-	Mg₄Si₃O₁₀ · 6H₂O ?
ⓘ	'Tourmaline'	-	AD₃G₆ (T₆O₁₈)(BO₃)₃X₃Z
ⓘ	'Chabazite'	-
ⓘ	'Biotite' ?	-	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
ⓘ	'Heulandite Subgroup'	-	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
ⓘ	'Limonite'	-
ⓘ	'Grossular-Hibschite Series'	-
ⓘ	'Fayalite-Forsterite Series'	-
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'Serpentine Subgroup'	-	D₃[Si₂O₅](OH)₄
ⓘ	'Manganese Oxides var. Manganese Dendrites'	-
ⓘ	''	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
H	ⓘ Anthophyllite	◻{Mg₂}{Mg₅}(Si₈O₂₂)(OH)₂
H	ⓘ Antigorite	Mg₃(Si₂O₅)(OH)₄
H	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
H	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
H	ⓘ Brochantite	Cu₄(SO₄)(OH)₆
H	ⓘ Brucite	Mg(OH)₂
H	ⓘ Chrysotile	Mg₃(Si₂O₅)(OH)₄
H	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
H	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
H	ⓘ Clinozoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
H	ⓘ Coalingite	Mg₁₀Fe₂³⁺(OH)₂₄[CO₃] · 2H₂O
H	ⓘ Desautelsite	Mg₆Mn₂³⁺(OH)₁₆[CO₃] · 4H₂O
H	ⓘ Deweylite	Mg₄Si₃O₁₀ · 6H₂O ?
H	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
H	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
H	ⓘ Erythrite	Co₃(AsO₄)₂ · 8H₂O
H	ⓘ Goethite	α-Fe³⁺O(OH)
H	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
H	ⓘ Hydromagnesite	Mg₅(CO₃)₄(OH)₂ · 4H₂O
H	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
H	ⓘ Lizardite	Mg₃(Si₂O₅)(OH)₄
H	ⓘ Magnesio-hornblende	◻Ca₂(Mg₄Al)(Si₇Al)O₂₂(OH)₂
H	ⓘ Malachite	Cu₂(CO₃)(OH)₂
H	ⓘ Margarite	CaAl₂(Al₂Si₂O₁₀)(OH)₂
H	ⓘ Mcguinnessite	(Mg,Cu)₂(CO₃)(OH)₂
H	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
H	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
H	ⓘ Nacrite	Al₂(Si₂O₅)(OH)₄
H	ⓘ Nimite	(Ni,Mg,Al)₆((Si,Al)₄O₁₀)(OH)₈
H	ⓘ Opal	SiO₂ · nH₂O
H	ⓘ Pargasite	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂
H	ⓘ Pecoraite	Ni₃(Si₂O₅)(OH)₄
H	ⓘ Pokrovskite	Mg₂(CO₃)(OH)₂
H	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
H	ⓘ Scolecite	CaAl₂Si₃O₁₀ · 3H₂O
H	ⓘ Stellerite	Ca₄(Si₂₈Al₈)O₇₂ · 28H₂O
H	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
H	ⓘ Zoisite var. Thulite	{Ca₂}{Al,Mn₃³⁺}(Si₂O₇)(SiO₄)O(OH)
H	ⓘ Tochilinite	Fe²⁺_5-6(Mg,Fe²⁺)₅S₆(OH)₁₀
H	ⓘ Tremolite	◻Ca₂Mg₅(Si₈O₂₂)(OH)₂
H	ⓘ Vesuvianite	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉
H	ⓘ Xonotlite	Ca₆(Si₆O₁₇)(OH)₂
H	ⓘ Zoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
H	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
B	Boron
B	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
B	ⓘ Tourmaline	AD₃G₆ (T₆O₁₈)(BO₃)₃X₃Z
C	Carbon
C	ⓘ Aragonite	CaCO₃
C	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
C	ⓘ Calcite	CaCO₃
C	ⓘ Coalingite	Mg₁₀Fe₂³⁺(OH)₂₄[CO₃] · 2H₂O
C	ⓘ Desautelsite	Mg₆Mn₂³⁺(OH)₁₆[CO₃] · 4H₂O
C	ⓘ Dolomite	CaMg(CO₃)₂
C	ⓘ Huntite	CaMg₃(CO₃)₄
C	ⓘ Hydromagnesite	Mg₅(CO₃)₄(OH)₂ · 4H₂O
C	ⓘ Magnesite	MgCO₃
C	ⓘ Malachite	Cu₂(CO₃)(OH)₂
C	ⓘ Mcguinnessite	(Mg,Cu)₂(CO₃)(OH)₂
C	ⓘ Pokrovskite	Mg₂(CO₃)(OH)₂
O	Oxygen
O	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Anthophyllite	◻{Mg₂}{Mg₅}(Si₈O₂₂)(OH)₂
O	ⓘ Antigorite	Mg₃(Si₂O₅)(OH)₄
O	ⓘ Aragonite	CaCO₃
O	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
O	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
O	ⓘ Brochantite	Cu₄(SO₄)(OH)₆
O	ⓘ Brucite	Mg(OH)₂
O	ⓘ Calcite	CaCO₃
O	ⓘ Quartz var. Chalcedony	SiO₂
O	ⓘ Chrysotile	Mg₃(Si₂O₅)(OH)₄
O	ⓘ Diopside var. Chromium-bearing Diopside	Ca(Mg,Cr)Si₂O₆
O	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
O	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
O	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
O	ⓘ Clinozoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
O	ⓘ Coalingite	Mg₁₀Fe₂³⁺(OH)₂₄[CO₃] · 2H₂O
O	ⓘ Desautelsite	Mg₆Mn₂³⁺(OH)₁₆[CO₃] · 4H₂O
O	ⓘ Deweylite	Mg₄Si₃O₁₀ · 6H₂O ?
O	ⓘ Diopside	CaMgSi₂O₆
O	ⓘ Dolomite	CaMg(CO₃)₂
O	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
O	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
O	ⓘ Erythrite	Co₃(AsO₄)₂ · 8H₂O
O	ⓘ Fluorapatite	Ca₅(PO₄)₃F
O	ⓘ Goethite	α-Fe³⁺O(OH)
O	ⓘ Grossular	Ca₃Al₂(SiO₄)₃
O	ⓘ Hematite	Fe₂O₃
O	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
O	ⓘ Huntite	CaMg₃(CO₃)₄
O	ⓘ Hydromagnesite	Mg₅(CO₃)₄(OH)₂ · 4H₂O
O	ⓘ Ilmenite	Fe²⁺TiO₃
O	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
O	ⓘ Lizardite	Mg₃(Si₂O₅)(OH)₄
O	ⓘ Magnesite	MgCO₃
O	ⓘ Magnesio-hornblende	◻Ca₂(Mg₄Al)(Si₇Al)O₂₂(OH)₂
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Malachite	Cu₂(CO₃)(OH)₂
O	ⓘ Margarite	CaAl₂(Al₂Si₂O₁₀)(OH)₂
O	ⓘ Mcguinnessite	(Mg,Cu)₂(CO₃)(OH)₂
O	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
O	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Nacrite	Al₂(Si₂O₅)(OH)₄
O	ⓘ Nimite	(Ni,Mg,Al)₆((Si,Al)₄O₁₀)(OH)₈
O	ⓘ Omphacite	(Na_aCa_bFe_c²⁺Mg_d)(Al_eFe_f³⁺Fe_g²⁺Mg_h)Si₂O₆
O	ⓘ Opal	SiO₂ · nH₂O
O	ⓘ Pargasite	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂
O	ⓘ Pecoraite	Ni₃(Si₂O₅)(OH)₄
O	ⓘ Pokrovskite	Mg₂(CO₃)(OH)₂
O	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
O	ⓘ Quartz	SiO₂
O	ⓘ Rutile	TiO₂
O	ⓘ Scolecite	CaAl₂Si₃O₁₀ · 3H₂O
O	ⓘ Stellerite	Ca₄(Si₂₈Al₈)O₇₂ · 28H₂O
O	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
O	ⓘ Zoisite var. Thulite	{Ca₂}{Al,Mn₃³⁺}(Si₂O₇)(SiO₄)O(OH)
O	ⓘ Titanite	CaTi(SiO₄)O
O	ⓘ Tochilinite	Fe²⁺_5-6(Mg,Fe²⁺)₅S₆(OH)₁₀
O	ⓘ Tourmaline	AD₃G₆ (T₆O₁₈)(BO₃)₃X₃Z
O	ⓘ Tremolite	◻Ca₂Mg₅(Si₈O₂₂)(OH)₂
O	ⓘ Vesuvianite	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉
O	ⓘ Xonotlite	Ca₆(Si₆O₁₇)(OH)₂
O	ⓘ Zoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
O	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
F	Fluorine
F	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
F	ⓘ Fluorapatite	Ca₅(PO₄)₃F
Na	Sodium
Na	ⓘ Albite	Na(AlSi₃O₈)
Na	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Na	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Na	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
Na	ⓘ Omphacite	(Na_aCa_bFe_c²⁺Mg_d)(Al_eFe_f³⁺Fe_g²⁺Mg_h)Si₂O₆
Na	ⓘ Pargasite	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Mg	Magnesium
Mg	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Mg	ⓘ Anthophyllite	◻{Mg₂}{Mg₅}(Si₈O₂₂)(OH)₂
Mg	ⓘ Antigorite	Mg₃(Si₂O₅)(OH)₄
Mg	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Mg	ⓘ Brucite	Mg(OH)₂
Mg	ⓘ Chrysotile	Mg₃(Si₂O₅)(OH)₄
Mg	ⓘ Diopside var. Chromium-bearing Diopside	Ca(Mg,Cr)Si₂O₆
Mg	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
Mg	ⓘ Coalingite	Mg₁₀Fe₂³⁺(OH)₂₄[CO₃] · 2H₂O
Mg	ⓘ Desautelsite	Mg₆Mn₂³⁺(OH)₁₆[CO₃] · 4H₂O
Mg	ⓘ Deweylite	Mg₄Si₃O₁₀ · 6H₂O ?
Mg	ⓘ Diopside	CaMgSi₂O₆
Mg	ⓘ Dolomite	CaMg(CO₃)₂
Mg	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Mg	ⓘ Huntite	CaMg₃(CO₃)₄
Mg	ⓘ Hydromagnesite	Mg₅(CO₃)₄(OH)₂ · 4H₂O
Mg	ⓘ Lizardite	Mg₃(Si₂O₅)(OH)₄
Mg	ⓘ Magnesite	MgCO₃
Mg	ⓘ Magnesio-hornblende	◻Ca₂(Mg₄Al)(Si₇Al)O₂₂(OH)₂
Mg	ⓘ Mcguinnessite	(Mg,Cu)₂(CO₃)(OH)₂
Mg	ⓘ Nimite	(Ni,Mg,Al)₆((Si,Al)₄O₁₀)(OH)₈
Mg	ⓘ Omphacite	(Na_aCa_bFe_c²⁺Mg_d)(Al_eFe_f³⁺Fe_g²⁺Mg_h)Si₂O₆
Mg	ⓘ Pargasite	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂
Mg	ⓘ Pokrovskite	Mg₂(CO₃)(OH)₂
Mg	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
Mg	ⓘ Tochilinite	Fe²⁺_5-6(Mg,Fe²⁺)₅S₆(OH)₁₀
Mg	ⓘ Tremolite	◻Ca₂Mg₅(Si₈O₂₂)(OH)₂
Mg	ⓘ Vesuvianite	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉
Al	Aluminium
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Al	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
Al	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
Al	ⓘ Clinozoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
Al	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Al	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Al	ⓘ Grossular	Ca₃Al₂(SiO₄)₃
Al	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Al	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Al	ⓘ Magnesio-hornblende	◻Ca₂(Mg₄Al)(Si₇Al)O₂₂(OH)₂
Al	ⓘ Margarite	CaAl₂(Al₂Si₂O₁₀)(OH)₂
Al	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
Al	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Nacrite	Al₂(Si₂O₅)(OH)₄
Al	ⓘ Nimite	(Ni,Mg,Al)₆((Si,Al)₄O₁₀)(OH)₈
Al	ⓘ Omphacite	(Na_aCa_bFe_c²⁺Mg_d)(Al_eFe_f³⁺Fe_g²⁺Mg_h)Si₂O₆
Al	ⓘ Pargasite	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂
Al	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Al	ⓘ Scolecite	CaAl₂Si₃O₁₀ · 3H₂O
Al	ⓘ Stellerite	Ca₄(Si₂₈Al₈)O₇₂ · 28H₂O
Al	ⓘ Zoisite var. Thulite	{Ca₂}{Al,Mn₃³⁺}(Si₂O₇)(SiO₄)O(OH)
Al	ⓘ Vesuvianite	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉
Al	ⓘ Zoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	Silicon
Si	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Anthophyllite	◻{Mg₂}{Mg₅}(Si₈O₂₂)(OH)₂
Si	ⓘ Antigorite	Mg₃(Si₂O₅)(OH)₄
Si	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Si	ⓘ Quartz var. Chalcedony	SiO₂
Si	ⓘ Chrysotile	Mg₃(Si₂O₅)(OH)₄
Si	ⓘ Diopside var. Chromium-bearing Diopside	Ca(Mg,Cr)Si₂O₆
Si	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
Si	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
Si	ⓘ Clinozoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
Si	ⓘ Deweylite	Mg₄Si₃O₁₀ · 6H₂O ?
Si	ⓘ Diopside	CaMgSi₂O₆
Si	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Si	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Si	ⓘ Grossular	Ca₃Al₂(SiO₄)₃
Si	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Si	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Si	ⓘ Lizardite	Mg₃(Si₂O₅)(OH)₄
Si	ⓘ Magnesio-hornblende	◻Ca₂(Mg₄Al)(Si₇Al)O₂₂(OH)₂
Si	ⓘ Margarite	CaAl₂(Al₂Si₂O₁₀)(OH)₂
Si	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
Si	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Nacrite	Al₂(Si₂O₅)(OH)₄
Si	ⓘ Nimite	(Ni,Mg,Al)₆((Si,Al)₄O₁₀)(OH)₈
Si	ⓘ Omphacite	(Na_aCa_bFe_c²⁺Mg_d)(Al_eFe_f³⁺Fe_g²⁺Mg_h)Si₂O₆
Si	ⓘ Opal	SiO₂ · nH₂O
Si	ⓘ Pargasite	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂
Si	ⓘ Pecoraite	Ni₃(Si₂O₅)(OH)₄
Si	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Si	ⓘ Quartz	SiO₂
Si	ⓘ Scolecite	CaAl₂Si₃O₁₀ · 3H₂O
Si	ⓘ Stellerite	Ca₄(Si₂₈Al₈)O₇₂ · 28H₂O
Si	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
Si	ⓘ Zoisite var. Thulite	{Ca₂}{Al,Mn₃³⁺}(Si₂O₇)(SiO₄)O(OH)
Si	ⓘ Titanite	CaTi(SiO₄)O
Si	ⓘ Tremolite	◻Ca₂Mg₅(Si₈O₂₂)(OH)₂
Si	ⓘ Vesuvianite	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉
Si	ⓘ Xonotlite	Ca₆(Si₆O₁₇)(OH)₂
Si	ⓘ Zoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
P	Phosphorus
P	ⓘ Fluorapatite	Ca₅(PO₄)₃F
S	Sulfur
S	ⓘ Bornite	Cu₅FeS₄
S	ⓘ Brochantite	Cu₄(SO₄)(OH)₆
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Chalcocite	Cu₂S
S	ⓘ Galena	PbS
S	ⓘ Millerite	NiS
S	ⓘ Molybdenite	MoS₂
S	ⓘ Pentlandite	(Ni_xFe_y)_Σ9S₈
S	ⓘ Pyrite	FeS₂
S	ⓘ Pyrrhotite	Fe_1-xS
S	ⓘ Tochilinite	Fe²⁺_5-6(Mg,Fe²⁺)₅S₆(OH)₁₀
K	Potassium
K	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
K	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
K	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Ca	Calcium
Ca	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Ca	ⓘ Aragonite	CaCO₃
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Diopside var. Chromium-bearing Diopside	Ca(Mg,Cr)Si₂O₆
Ca	ⓘ Clinozoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
Ca	ⓘ Diopside	CaMgSi₂O₆
Ca	ⓘ Dolomite	CaMg(CO₃)₂
Ca	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Ca	ⓘ Fluorapatite	Ca₅(PO₄)₃F
Ca	ⓘ Grossular	Ca₃Al₂(SiO₄)₃
Ca	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Ca	ⓘ Huntite	CaMg₃(CO₃)₄
Ca	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Ca	ⓘ Magnesio-hornblende	◻Ca₂(Mg₄Al)(Si₇Al)O₂₂(OH)₂
Ca	ⓘ Margarite	CaAl₂(Al₂Si₂O₁₀)(OH)₂
Ca	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
Ca	ⓘ Omphacite	(Na_aCa_bFe_c²⁺Mg_d)(Al_eFe_f³⁺Fe_g²⁺Mg_h)Si₂O₆
Ca	ⓘ Pargasite	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂
Ca	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Ca	ⓘ Scolecite	CaAl₂Si₃O₁₀ · 3H₂O
Ca	ⓘ Stellerite	Ca₄(Si₂₈Al₈)O₇₂ · 28H₂O
Ca	ⓘ Zoisite var. Thulite	{Ca₂}{Al,Mn₃³⁺}(Si₂O₇)(SiO₄)O(OH)
Ca	ⓘ Titanite	CaTi(SiO₄)O
Ca	ⓘ Tremolite	◻Ca₂Mg₅(Si₈O₂₂)(OH)₂
Ca	ⓘ Vesuvianite	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉
Ca	ⓘ Xonotlite	Ca₆(Si₆O₁₇)(OH)₂
Ca	ⓘ Zoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Ti	Titanium
Ti	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Ti	ⓘ Ilmenite	Fe²⁺TiO₃
Ti	ⓘ Rutile	TiO₂
Ti	ⓘ Titanite	CaTi(SiO₄)O
Cr	Chromium
Cr	ⓘ Diopside var. Chromium-bearing Diopside	Ca(Mg,Cr)Si₂O₆
Cr	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Mn	Manganese
Mn	ⓘ Desautelsite	Mg₆Mn₂³⁺(OH)₁₆[CO₃] · 4H₂O
Mn	ⓘ Zoisite var. Thulite	{Ca₂}{Al,Mn₃³⁺}(Si₂O₇)(SiO₄)O(OH)
Fe	Iron
Fe	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Fe	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Fe	ⓘ Bornite	Cu₅FeS₄
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	ⓘ Coalingite	Mg₁₀Fe₂³⁺(OH)₂₄[CO₃] · 2H₂O
Fe	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Fe	ⓘ Goethite	α-Fe³⁺O(OH)
Fe	ⓘ Hematite	Fe₂O₃
Fe	ⓘ Ilmenite	Fe²⁺TiO₃
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Omphacite	(Na_aCa_bFe_c²⁺Mg_d)(Al_eFe_f³⁺Fe_g²⁺Mg_h)Si₂O₆
Fe	ⓘ Pentlandite	(Ni_xFe_y)_Σ9S₈
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Pyrrhotite	Fe_1-xS
Fe	ⓘ Tochilinite	Fe²⁺_5-6(Mg,Fe²⁺)₅S₆(OH)₁₀
Fe	ⓘ Vesuvianite	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉
Co	Cobalt
Co	ⓘ Erythrite	Co₃(AsO₄)₂ · 8H₂O
Ni	Nickel
Ni	ⓘ Millerite	NiS
Ni	ⓘ Nimite	(Ni,Mg,Al)₆((Si,Al)₄O₁₀)(OH)₈
Ni	ⓘ Pecoraite	Ni₃(Si₂O₅)(OH)₄
Ni	ⓘ Pentlandite	(Ni_xFe_y)_Σ9S₈
Cu	Copper
Cu	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
Cu	ⓘ Bornite	Cu₅FeS₄
Cu	ⓘ Brochantite	Cu₄(SO₄)(OH)₆
Cu	ⓘ Chalcopyrite	CuFeS₂
Cu	ⓘ Chalcocite	Cu₂S
Cu	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
Cu	ⓘ Malachite	Cu₂(CO₃)(OH)₂
Cu	ⓘ Mcguinnessite	(Mg,Cu)₂(CO₃)(OH)₂
As	Arsenic
As	ⓘ Erythrite	Co₃(AsO₄)₂ · 8H₂O
Mo	Molybdenum
Mo	ⓘ Molybdenite	MoS₂
Pd	Palladium
Pd	ⓘ Palladium	(Pd,Pt)
Pt	Platinum
Pt	ⓘ Palladium	(Pd,Pt)
Pt	ⓘ Platinum	Pt
Pb	Lead
Pb	ⓘ Galena	PbS

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate

Piedmontia DomainDomain

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References

Griesbach, John (1956) Rockville Crushed Stone Quarry. Rocks and Minerals: 31: 351-353.

Bernstein, Lawrence (1980) Minerals of the Washington D. C. area. Maryland Geological Survey Educational Series 5, 148 pages.

[1]Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446

Parker, F. (2014) Fred Parker Updates his 2005 Hunting Hill Mineralogical Record Article: Mineral Bliss website

mineralbliss.blogspot.com (n.d.) http://mineralbliss.blogspot.com/2014/01/fred-parker-updates-his-2005-hunting.html

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Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USAiRegional Level TypesHunting Hill QuarryQuarry (Active) RockvilleCity Montgomery CountyCounty MarylandState USACountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA i
Regional Level Types
Hunting Hill Quarry Quarry (Active)
Rockville City
Montgomery County County
Maryland State
USA Country