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Mc Gregor Quarry, Highway 26, Clatsop Co., Oregon, USA i
Regional Level Types
Mc Gregor Quarry Quarry (Active)
Highway 26 Road
Clatsop Co. County
Oregon State
USA Country

Regional Level Types
Mc Gregor Quarry	Quarry (Active)
Highway 26	Road
Clatsop Co.	County
Oregon	State
USA	Country

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Looking up from the second level

Mc Gregor Quarry, Highway 26, Clatsop Co., Oregon, USA

Pyrite, etc.

Mc Gregor Quarry, Highway 26, Clatsop Co., Oregon, USA

Marcasite, etc.

Mc Gregor Quarry, Highway 26, Clatsop Co., Oregon, USA

Looking up from the second level

Mc Gregor Quarry, Highway 26, Clatsop Co., Oregon, USA

Pyrite, etc.

Mc Gregor Quarry, Highway 26, Clatsop Co., Oregon, USA

Marcasite, etc.

Mc Gregor Quarry, Highway 26, Clatsop Co., Oregon, USA

Looking up from the second level

Mc Gregor Quarry, Highway 26, Clatsop Co., Oregon, USA

Pyrite, etc.

Mc Gregor Quarry, Highway 26, Clatsop Co., Oregon, USA

Latitude & Longitude (WGS84):

45° 48' 28'' North , 123° 25' 49'' West

Latitude & Longitude (decimal):

G#: c20hx70fb

Locality type:

Quarry (Active) - last checked 2020

Deposit first discovered:

2019

Köppen climate type:

Csb : Warm-summer Mediterranean climate

Nearest Settlements:

Place	Population	Distance
Vernonia	2,143 (2017)	19.2km
Banks	1,934 (2017)	32.3km
Westport	321 (2011)	36.3km
Clatskanie	1,759 (2017)	36.9km
Nehalem	278 (2017)	37.3km

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

Club	Location	Distance
Tualatin Valley Gem Club	Forest Grove, Oregon	41km
North American Research Group	Hillsboro, Oregon	47km

Originally shared with me by Michael Feehan, who knows the Oregon Coast Range better than just about anyone I've met. He found the locality looking for free gold, and shared it with me last year via a digital conversation, mentioning some unknown zeolites were present. Considering he now lives out of state, I had to investigate for both our sakes, and found a well hidden very large Quarry, with 5 major terraces/benches dug out, all around 700-900ft combined top to bottom. A combination of numerous rock types of similar chemistry are found around the quarry, with the same material being found on just about every level. The main rock type is Basalt, but there are basalt flows separated by marine sedimentary rocks, as well as lahar like tuff layers that have all experienced Zeolite facies metamorphism, as well as other types of hydrothermal alteration in addition. This is an active quarry, with equipment brought in every few months to break rocks down to make new logging roads, and for that reason, travel on the roads, as well as digging at the quarry requires good discretion and attention to safety for all. Workers have been kind enough to let me work safely away from them in the past, but I don't think anyone should push their luck...

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

11 valid minerals.

Detailed Mineral List:

ⓘ Amicite ?

Formula: K₂Na₂Al₄Si₄O₁₆ · 5H₂O

Reference: Zach Capel

ⓘ Baryte

Formula: BaSO₄

Reference: Zach Capel

ⓘ Calcite

Formula: CaCO₃

Reference: Zach Capel

ⓘ Celadonite

Formula: K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂

Reference: Zach Capel

ⓘ 'Chlorite Group'

Reference: Zach Capel

ⓘ Harmotome

Formula: Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O

Reference: Zach Capel

ⓘ 'Heulandite'

Reference: Zach Capel

ⓘ Laumontite

Formula: CaAl₂Si₄O₁₂ · 4H₂O

Reference: Zach Capel

Marcasite, etc.

Mc Gregor Quarry, Highway 26, Clatsop Co., Oregon, USA

ⓘ Marcasite

Formula: FeS₂

Reference: Zach Capel

ⓘ Mordenite

Formula: (Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O

Reference: Zach Capel

ⓘ Natrolite

Formula: Na₂Al₂Si₃O₁₀ · 2H₂O

Reference: Zach Capel

Pyrite, etc.

Mc Gregor Quarry, Highway 26, Clatsop Co., Oregon, USA

ⓘ Pyrite

Formula: FeS₂

Reference: Zach Capel

ⓘ Quartz

Formula: SiO₂

Reference: Zach Capel

ⓘ 'Smectite Group'

Formula: A_0.3D_2-3[T₄O₁₀]Z₂ · nH₂O

Reference: Zach Capel

ⓘ 'Stilbite Subgroup'

Formula: M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O

Reference: Zach Capel

Gallery:

FeS₂ⓘ Pyrite

Pyrite, etc.

Mc Gregor Quarry, Highway 26, Clatsop Co., Oregon, USA

Pyrite, etc.

Mc Gregor Quarry, Highway 26, Clatsop Co., Oregon, USA

Pyrite, etc.

Mc Gregor Quarry, Highway 26, Clatsop Co., Oregon, USA

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Marcasite	2.EB.10a	FeS₂
ⓘ	Pyrite	2.EB.05a	FeS₂
Group 4 - Oxides and Hydroxides
ⓘ	Quartz	4.DA.05	SiO₂
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Baryte	7.AD.35	BaSO₄
Group 9 - Silicates
ⓘ	Amicite ?	9.GC.05	K₂Na₂Al₄Si₄O₁₆ · 5H₂O
ⓘ	Celadonite	9.EC.15	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
ⓘ	Harmotome	9.GC.10	Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O
ⓘ	Laumontite	9.GB.10	CaAl₂Si₄O₁₂ · 4H₂O
ⓘ	Mordenite	9.GD.35	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
ⓘ	Natrolite	9.GA.05	Na₂Al₂Si₃O₁₀ · 2H₂O
Unclassified Minerals, Rocks, etc.
ⓘ	'Chlorite Group'	-
ⓘ	'Heulandite'	-
ⓘ	'Smectite Group'	-	A_0.3D_2-3[T₄O₁₀]Z₂ · nH₂O
ⓘ	'Stilbite Subgroup'	-	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Smectite Group	A_0.3D_2-3[T₄O₁₀]Z₂ · nH₂O
H	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
H	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
H	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
H	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
H	ⓘ Harmotome	Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O
H	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
H	ⓘ Amicite	K₂Na₂Al₄Si₄O₁₆ · 5H₂O
C	Carbon
C	ⓘ Calcite	CaCO₃
O	Oxygen
O	ⓘ Baryte	BaSO₄
O	ⓘ Smectite Group	A_0.3D_2-3[T₄O₁₀]Z₂ · nH₂O
O	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
O	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
O	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
O	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
O	ⓘ Harmotome	Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O
O	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
O	ⓘ Calcite	CaCO₃
O	ⓘ Quartz	SiO₂
O	ⓘ Amicite	K₂Na₂Al₄Si₄O₁₆ · 5H₂O
Na	Sodium
Na	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
Na	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Na	ⓘ Amicite	K₂Na₂Al₄Si₄O₁₆ · 5H₂O
Mg	Magnesium
Mg	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
Al	Aluminium
Al	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
Al	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Al	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Al	ⓘ Harmotome	Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O
Al	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
Al	ⓘ Amicite	K₂Na₂Al₄Si₄O₁₆ · 5H₂O
Si	Silicon
Si	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
Si	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
Si	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Si	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Si	ⓘ Harmotome	Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O
Si	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
Si	ⓘ Quartz	SiO₂
Si	ⓘ Amicite	K₂Na₂Al₄Si₄O₁₆ · 5H₂O
S	Sulfur
S	ⓘ Baryte	BaSO₄
S	ⓘ Marcasite	FeS₂
S	ⓘ Pyrite	FeS₂
K	Potassium
K	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
K	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
K	ⓘ Amicite	K₂Na₂Al₄Si₄O₁₆ · 5H₂O
Ca	Calcium
Ca	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
Ca	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Ca	ⓘ Calcite	CaCO₃
Fe	Iron
Fe	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
Fe	ⓘ Marcasite	FeS₂
Fe	ⓘ Pyrite	FeS₂
Ba	Barium
Ba	ⓘ Baryte	BaSO₄
Ba	ⓘ Harmotome	Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O

Other Regions, Features and Areas containing this locality

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Coast MountainsMountain Range

North America PlateTectonic Plate

Siletzia DomainDomain
Western Washington–Oregon BasinsBasin

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Mc Gregor Quarry, Highway 26, Clatsop Co., Oregon, USAiRegional Level TypesMc Gregor QuarryQuarry (Active) Highway 26Road Clatsop Co.County OregonState USACountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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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

Mc Gregor Quarry, Highway 26, Clatsop Co., Oregon, USA i
Regional Level Types
Mc Gregor Quarry Quarry (Active)
Highway 26 Road
Clatsop Co. County
Oregon State
USA Country