Weissenborn, A.E. (1969) Mineral and Water Resources of Oregon. Department of Geology and Mineral Industries, Portland, Oregon, Bulletin 64, 462 pages, at Fig. 67, p.269.

ⓘ 'Jasper'

References:

Steve Ewens Collection

ⓘ Mordenite

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

References:

Weissenborn, A.E. (1969) Mineral and Water Resources of Oregon. Department of Geology and Mineral Industries, Portland, Oregon, Bulletin 64, 462 pages, at Fig. 67, p.269.

ⓘ 'Natrolite Subgroup'

Description: Gregg Little: ""On to the samples: The needle-like (radiating sprays) crystals are a zeolite and likely one of the three more common ones natrolite, mesolite and scolecite. Your crystals, these three minerals, plus two others (paranatrolite and gonnardite) are part of the Natrolite Subgroup which is part of the larger Zeolite Group of minerals. In the Zeolite Group for the natrolite-mesolite-scolecite series, it is basically a compositional variation of sodium and calcium with natrolite on the sodium end and scolecite on the calcium end and mesolite somewhere in the middle containing both elements. Since the crystal form, specific gravity, streak, etc. is the same, more sophisticated analysis is about the only way to differentiate the three minerals. To label this sample for your entry on Mindat, the best you can accurately do is call it a zeolite and part of the Natrolite Subgroup". Mindat photograph reference 1202859 Steve Ewens collection.

ⓘ Opal

Formula: SiO₂ · nH₂O

References:

Steve Ewens Collection

ⓘ Opal var. Common Opal

Formula: SiO₂ · nH₂O

References:

Steve Ewens Collection

ⓘ 'Phillipsite Subgroup'

References:

Weissenborn, A.E. (1969) Mineral and Water Resources of Oregon. Department of Geology and Mineral Industries, Portland, Oregon, Bulletin 64, 462 pages, at Fig. 67, p.269.

ⓘ Quartz

Formula: SiO₂

References:

Steve Ewens Collection

ⓘ Quartz var. Agate

References:

Steve Ewens Collection

Gallery:

CaCO₃ⓘ Calcite

K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂ⓘ Celadonite

ⓘ 'Jasper'

SiO₂ · nH₂Oⓘ Opal

SiO₂ⓘ Quartz

ⓘ Quartz var. Agate

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘ	Quartz var. Agate	4.DA.05	SiO₂
ⓘ		4.DA.05	SiO₂
ⓘ	Opal	4.DA.10	SiO₂ · nH₂O
ⓘ	var. Common Opal	4.DA.10	SiO₂ · nH₂O
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
ⓘ	Aragonite	5.AB.15	CaCO₃
Group 9 - Silicates
ⓘ	Celadonite	9.EC.15	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
ⓘ	Mordenite	9.GD.35	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
Unclassified
ⓘ	'Clinoptilolite Subgroup'	-	M_3-6(Si₃₀Al₆)O₇₂ · 20H₂O
ⓘ	'Jasper'	-
ⓘ	'Phillipsite Subgroup'	-
ⓘ	'Natrolite Subgroup'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
H	ⓘ Clinoptilolite Subgroup	M_3-6(Si₃₀Al₆)O₇₂ · 20H₂O
H	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
H	ⓘ Opal	SiO₂ · nH₂O
H	ⓘ Opal var. Common Opal	SiO₂ · nH₂O
C	Carbon
C	ⓘ Aragonite	CaCO₃
C	ⓘ Calcite	CaCO₃
O	Oxygen
O	ⓘ Aragonite	CaCO₃
O	ⓘ Calcite	CaCO₃
O	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
O	ⓘ Clinoptilolite Subgroup	M_3-6(Si₃₀Al₆)O₇₂ · 20H₂O
O	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
O	ⓘ Opal	SiO₂ · nH₂O
O	ⓘ Quartz	SiO₂
O	ⓘ Opal var. Common Opal	SiO₂ · nH₂O
Na	Sodium
Na	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
Mg	Magnesium
Mg	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
Al	Aluminium
Al	ⓘ Clinoptilolite Subgroup	M_3-6(Si₃₀Al₆)O₇₂ · 20H₂O
Al	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
Si	Silicon
Si	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
Si	ⓘ Clinoptilolite Subgroup	M_3-6(Si₃₀Al₆)O₇₂ · 20H₂O
Si	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
Si	ⓘ Opal	SiO₂ · nH₂O
Si	ⓘ Quartz	SiO₂
Si	ⓘ Opal var. Common Opal	SiO₂ · nH₂O
K	Potassium
K	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
K	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
Ca	Calcium
Ca	ⓘ Aragonite	CaCO₃
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O
Fe	Iron
Fe	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂

Other Databases

Link to USGS MRDS:	10053575

Mindat Articles

Hart Mountain Oregon: Amygdale Pseudomorphs by Steve Ewens
Hart Mountain West Face Occurrence, Hart Canyon Subset by Steve Ewens

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate

Hornbrook-Ochoco BasinBasin
Shoofly-Olds Ferry DomainDomain
Southeast Oregon–Northern California BasinsBasin

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Walker, G.W., Sw1anson, D.A. (1968) Summary report on the geology and mineral resources of the Poker Jim Ridge and Fort Warner areas of the Hart Mountain National Antelope Refuge, Lake County, Oregon. U.S. Geological Survey Bulletin 1260-M, p. M1-M16.

Weissenborn, A.E. (1969) Mineral and Water Resources of Oregon. Department of Geology and Mineral Industries, Portland, Oregon, Bulletin 64, 462 pages, at Fig. 67, p.269.

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