This is a volcanic intrusion that protrudes from the valley floor. The intrusion contains lots of xenolliths, some of which are plagioclase phenocrysts. The rock has plenty of small vugs lined with adularia, laumontite, quartz, fluorite, chlorite, and exuenite-Y. Access is still available as of March 2013.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ 'Chlorite Group'

8 valid minerals.

Detailed Mineral List:

ⓘ 'Chlorite Group'

References:

A Collector's Guide to Rock, Mineral, and Fossil Localities of Utah

ⓘ Epidote

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

References:

A Collector's Guide to Rock, Mineral, and Fossil Localities of Utah

ⓘ Euxenite-(Y)

Formula: (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆

References:

A Collector's Guide to Rock, Mineral, and Fossil Localities of Utah

ⓘ Fluorite

Formula: CaF₂

References:

A Collector's Guide to Rock, Mineral, and Fossil Localities of Utah

ⓘ Goethite

Formula: α-Fe³⁺O(OH)

References:

Collected by and in the collection of Alex Earl

ⓘ 'K Feldspar'

References:

A Collector's Guide to Rock, Mineral, and Fossil Localities of Utah

ⓘ 'K Feldspar var. Adularia'

Formula: KAlSi₃O₈

References:

A Collector's Guide to Rock, Mineral, and Fossil Localities of Utah

ⓘ Laumontite

Formula: CaAl₂Si₄O₁₂ · 4H₂O

References:

A Collector's Guide to Rock, Mineral, and Fossil Localities of Utah

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

References:

A Collector's Guide to Rock, Mineral, and Fossil Localities of Utah

ⓘ Pyrite

Formula: FeS₂

References:

Collected by and in the collection of Alex Earl

ⓘ Quartz

Formula: SiO₂

References:

A Collector's Guide to Rock, Mineral, and Fossil Localities of Utah

ⓘ Titanite

Formula: CaTi(SiO₄)O

References:

Robert Housley collection identified by Raman spectroscopy

Gallery:

(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)ⓘ Epidote

(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆ⓘ Euxenite-(Y)

CaF₂ⓘ Fluorite

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Pyrite	2.EB.05a	FeS₂
Group 3 - Halides
ⓘ	Fluorite	3.AB.25	CaF₂
Group 4 - Oxides and Hydroxides
ⓘ	Goethite	4.00.	α-Fe³⁺O(OH)
ⓘ	Quartz	4.DA.05	SiO₂
ⓘ	Euxenite-(Y)	4.DG.05	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆
Group 9 - Silicates
ⓘ	Titanite	9.AG.15	CaTi(SiO₄)O
ⓘ	Epidote	9.BG.05a	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
ⓘ	Laumontite	9.GB.10	CaAl₂Si₄O₁₂ · 4H₂O
Unclassified
ⓘ	'K Feldspar var. Adularia'	-	KAlSi₃O₈
ⓘ	'Chlorite Group'	-
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'K Feldspar'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
H	ⓘ Goethite	α-Fe³⁺O(OH)
H	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
O	Oxygen
O	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
O	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
O	ⓘ Euxenite-(Y)	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆
O	ⓘ Goethite	α-Fe³⁺O(OH)
O	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
O	ⓘ Quartz	SiO₂
O	ⓘ Titanite	CaTi(SiO₄)O
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
F	Fluorine
F	ⓘ Fluorite	CaF₂
Na	Sodium
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Al	Aluminium
Al	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
Al	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Al	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	Silicon
Si	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
Si	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Si	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Si	ⓘ Quartz	SiO₂
Si	ⓘ Titanite	CaTi(SiO₄)O
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
S	Sulfur
S	ⓘ Pyrite	FeS₂
K	Potassium
K	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
Ca	Calcium
Ca	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Ca	ⓘ Euxenite-(Y)	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆
Ca	ⓘ Fluorite	CaF₂
Ca	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Ca	ⓘ Titanite	CaTi(SiO₄)O
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Ti	Titanium
Ti	ⓘ Euxenite-(Y)	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆
Ti	ⓘ Titanite	CaTi(SiO₄)O
Fe	Iron
Fe	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Fe	ⓘ Goethite	α-Fe³⁺O(OH)
Fe	ⓘ Pyrite	FeS₂
Y	Yttrium
Y	ⓘ Euxenite-(Y)	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆
Nb	Niobium
Nb	ⓘ Euxenite-(Y)	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆
Ce	Cerium
Ce	ⓘ Euxenite-(Y)	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆
Ta	Tantalum
Ta	ⓘ Euxenite-(Y)	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆
Th	Thorium
Th	ⓘ Euxenite-(Y)	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆
U	Uranium
U	ⓘ Euxenite-(Y)	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate

USA

Utah
- Escalante DesertDesert

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References

Wilson, James R. (1995), A Collector's Guide to Rock, Mineral, and Fossil Localities of Utah. Department of Geology, Weber State University.

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Highway 21 Quarry, Milford, Beaver County, Utah, USAiRegional Level TypesHighway 21 QuarryQuarry MilfordCity Beaver CountyCounty UtahState USACountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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Mineral List

Detailed Mineral List:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Other Regions, Features and Areas containing this locality

References

Highway 21 Quarry, Milford, Beaver County, Utah, USA i
Regional Level Types
Highway 21 Quarry Quarry
Milford City
Beaver County County
Utah State
USA Country