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Spectrum Mine, Plush, Lake County, Oregon, USAi
Regional Level Types
Spectrum MineMine
PlushCensus-designated Place
Lake CountyCounty
OregonState
USACountry

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Latitude & Longitude (WGS84):
42° 43' 59'' North , 119° 52' 6'' West
Latitude & Longitude (decimal):
42.73331,-119.86838
GeoHash:
G#:9rdg076e8
GRN:
N29W64
Type:
Mine
Köppen climate type:
BSk : Cold semi-arid (steppe) climate
Mindat Locality ID:
250051
Long-form identifier:
mindat:1:2:250051:8
GUID (UUID V4):
0


The Spectrum mine is a patented 20 acre lode mining claim located on a deposit of calcium-rich plagioclase phenocrysts which is hosted in basalt flows. The mine produces gem quality plagioclase, some of which contains inclusions of copper parallel to the principal cleavage-plane, which causes an optical effect called schiller, often referred to as Oregon Sunstone.

The Spectrum property is currently owned and operated by High Desert Gems and Minerals which conducts intermittent surface mining operations. The site is also the location for a commercial fee-for-dig screening operation and camping area which are open to the public by reservation.

Select Mineral List Type

StandardDetailedGalleryStrunzChemical Elements

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘOpal
var. Opal-AN		4.DA.10SiO2 · nH2O
ⓘ4.DA.10SiO2 · nH2O
Group 9 - Silicates
ⓘAnorthite9.FA.35Ca(Al2Si2O8)
ⓘvar. Labradorite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
ⓘvar. Oregon Sunstone9.FA.35Ca(Al2Si2O8)
Unclassified
ⓘ'Feldspar Group'-
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Feldspar Group
var. Sunstone'		-

List of minerals for each chemical element

HHydrogen
HⓘOpal var.Opal-ANSiO2 · nH2O
HⓘOpalSiO2 · nH2O
OOxygen
OⓘAnorthiteCa(Al2Si2O8)
OⓘOpal var.Opal-ANSiO2 · nH2O
OⓘAnorthite var.Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
OⓘOpalSiO2 · nH2O
OⓘPlagioclase(Na,Ca)[(Si,Al)AlSi2]O8
OⓘAnorthite var.Oregon SunstoneCa(Al2Si2O8)
NaSodium
NaⓘAnorthite var.Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
NaⓘPlagioclase(Na,Ca)[(Si,Al)AlSi2]O8
AlAluminium
AlⓘAnorthiteCa(Al2Si2O8)
AlⓘAnorthite var.Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
AlⓘPlagioclase(Na,Ca)[(Si,Al)AlSi2]O8
AlⓘAnorthite var.Oregon SunstoneCa(Al2Si2O8)
SiSilicon
SiⓘAnorthiteCa(Al2Si2O8)
SiⓘOpal var.Opal-ANSiO2 · nH2O
SiⓘAnorthite var.Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
SiⓘOpalSiO2 · nH2O
SiⓘPlagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiⓘAnorthite var.Oregon SunstoneCa(Al2Si2O8)
CaCalcium
CaⓘAnorthiteCa(Al2Si2O8)
CaⓘAnorthite var.Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
CaⓘPlagioclase(Na,Ca)[(Si,Al)AlSi2]O8
CaⓘAnorthite var.Oregon SunstoneCa(Al2Si2O8)

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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, pleaseregister so you can add to our database. This locality information is for reference purposes only. You should never attempt tovisit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holdersfor access and that you are aware of all safety precautions necessary.

References

en.wikipedia.org (n.d.)http://en.wikipedia.org/wiki/Sunstone#Oregon_sunstone
www.highdesertgemsandminerals.com (n.d.)http://www.highdesertgemsandminerals.com/html/spectrum_mine_digs.html
O'Neal, C. (2013), Field collection and visual analysis of the Oregon Sunstone deposits near Plush, Lake County, Oregon; March.
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