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

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

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Looking up from the second level

Mc Gregor Quarry, Highway 26, Clatsop County, Oregon, USA

Pyrite, etc.

Mc Gregor Quarry, Highway 26, Clatsop County, Oregon, USA

Marcasite, etc.

Mc Gregor Quarry, Highway 26, Clatsop County, Oregon, USA

Looking up from the second level

Mc Gregor Quarry, Highway 26, Clatsop County, Oregon, USA

Pyrite, etc.

Mc Gregor Quarry, Highway 26, Clatsop County, Oregon, USA

Marcasite, etc.

Mc Gregor Quarry, Highway 26, Clatsop County, Oregon, USA

Looking up from the second level

Mc Gregor Quarry, Highway 26, Clatsop County, Oregon, USA

Pyrite, etc.

Mc Gregor Quarry, Highway 26, Clatsop County, Oregon, USA

Latitude & Longitude (WGS84):

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

Latitude & Longitude (decimal):

G#: c20hx70fb

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

Mindat Locality ID:

399346

Long-form identifier:

mindat:1:2:399346:3

GUID (UUID V4):

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

References:

Zach Capel

ⓘ Baryte

Formula: BaSO₄

References:

Zach Capel

ⓘ Calcite

Formula: CaCO₃

References:

Zach Capel

ⓘ Celadonite

Formula: K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂

References:

Zach Capel

ⓘ 'Chlorite Group'

References:

Zach Capel

ⓘ Harmotome

Formula: Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O

References:

Zach Capel

ⓘ 'Heulandite Subgroup'

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

References:

Zach Capel

ⓘ Laumontite

Formula: CaAl₂Si₄O₁₂ · 4H₂O

References:

Zach Capel

ⓘ Marcasite

Formula: FeS₂

References:

Zach Capel

ⓘ Mordenite

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

References:

Zach Capel

ⓘ Natrolite

Formula: Na₂Al₂Si₃O₁₀ · 2H₂O

References:

Zach Capel

ⓘ Pyrite

Formula: FeS₂

References:

Zach Capel

ⓘ Quartz

Formula: SiO₂

References:

Zach Capel

ⓘ 'Smectite Group'

Formula: A_0.3D_2-3[T₄O₁₀]Z₂ · nH₂O

References:

Zach Capel

ⓘ 'Stilbite Subgroup'

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

References:

Zach Capel

Gallery:

FeS₂ⓘ Pyrite

Pyrite, etc.

Mc Gregor Quarry, Highway 26, Clatsop County, Oregon, USA

Pyrite, etc.

Mc Gregor Quarry, Highway 26, Clatsop County, Oregon, USA

Pyrite, etc.

Mc Gregor Quarry, Highway 26, Clatsop County, Oregon, USA

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Pyrite	2.EB.05a	FeS₂
ⓘ	Marcasite	2.EB.10a	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
ⓘ	Celadonite	9.EC.15	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
ⓘ	Natrolite	9.GA.05	Na₂Al₂Si₃O₁₀ · 2H₂O
ⓘ	Laumontite	9.GB.10	CaAl₂Si₄O₁₂ · 4H₂O
ⓘ	Amicite ?	9.GC.05	K₂Na₂Al₄Si₄O₁₆ · 5H₂O
ⓘ	Harmotome	9.GC.10	Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O
ⓘ	Mordenite	9.GD.35	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
Unclassified
ⓘ	'Chlorite Group'	-
ⓘ	'Heulandite Subgroup'	-	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
ⓘ	'Stilbite Subgroup'	-	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
ⓘ	'Smectite Group'	-	A_0.3D_2-3[T₄O₁₀]Z₂ · nH₂O

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Amicite	K₂Na₂Al₄Si₄O₁₆ · 5H₂O
H	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
H	ⓘ Harmotome	Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O
H	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
H	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
H	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
H	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
H	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
H	ⓘ Smectite Group	A_0.3D_2-3[T₄O₁₀]Z₂ · nH₂O
C	Carbon
C	ⓘ Calcite	CaCO₃
O	Oxygen
O	ⓘ Amicite	K₂Na₂Al₄Si₄O₁₆ · 5H₂O
O	ⓘ Baryte	BaSO₄
O	ⓘ Calcite	CaCO₃
O	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
O	ⓘ Harmotome	Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O
O	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
O	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
O	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
O	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
O	ⓘ Quartz	SiO₂
O	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
O	ⓘ Smectite Group	A_0.3D_2-3[T₄O₁₀]Z₂ · nH₂O
Na	Sodium
Na	ⓘ Amicite	K₂Na₂Al₄Si₄O₁₆ · 5H₂O
Na	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Na	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
Na	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Mg	Magnesium
Mg	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
Al	Aluminium
Al	ⓘ Amicite	K₂Na₂Al₄Si₄O₁₆ · 5H₂O
Al	ⓘ Harmotome	Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O
Al	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Al	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Al	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
Al	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Al	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
Si	Silicon
Si	ⓘ Amicite	K₂Na₂Al₄Si₄O₁₆ · 5H₂O
Si	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
Si	ⓘ Harmotome	Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O
Si	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Si	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Si	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
Si	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Si	ⓘ Quartz	SiO₂
Si	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
S	Sulfur
S	ⓘ Baryte	BaSO₄
S	ⓘ Marcasite	FeS₂
S	ⓘ Pyrite	FeS₂
K	Potassium
K	ⓘ Amicite	K₂Na₂Al₄Si₄O₁₆ · 5H₂O
K	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
K	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
K	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
Ca	Calcium
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Ca	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Ca	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
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

North AmericaContinent

Coast MountainsMountain Range

North America PlateTectonic Plate

Pacific Coast RangesAccretionary Complex
Siletzia DomainDomain
Western Washington–Oregon BasinsBasin

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

Select Mineral List Type

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

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