Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Esterly Mine (Llano de Oro Mine; Cameron Placer Mine; Logan Placer Mine; Simmons Placer Mine), O'Brien, Takilma Mining District, Josephine County, Oregon, USAi
Regional Level Types
Esterly Mine (Llano de Oro Mine; Cameron Placer Mine; Logan Placer Mine; Simmons Placer Mine)Mine
O'BrienCensus-designated Place
Takilma Mining DistrictMining District
Josephine CountyCounty
OregonState
USACountry

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Latitude & Longitude (WGS84):
42° 4' North , 123° 42' West
Latitude & Longitude (decimal):
42.06667,-123.70000
GeoHash:
G#: 9r2p34h2j
GRN:
N29W66
Type:
Mine
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
O'Brien504 (2011)0.3km
Takilma378 (2011)6.9km
Cave Junction1,932 (2017)11.5km
Kerby595 (2011)14.7km
Selma695 (2011)24.6km
Mindat Locality ID:
27604
Long-form identifier:
mindat:1:2:27604:0
GUID (UUID V4):
0


Located in Sections 15, 22, and 27, Township 40 South, Range 8 West, Willamette Meridian.

Gold and platinum placer mine.


Ref.: Rocks & Min.: 17:131.

Oregon Metal Mines Handbook, 1952, Oregon Department of Geology and Mineral Industries: Bulletin No. 14-C, Vol. 2, Section 1 - Josephine Co., 2nd Edition, pages 194-196.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


8 valid minerals.

Detailed Mineral List:

ⓘ Chromite
Formula: Fe2+Cr3+2O4
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ Hematite
Formula: Fe2O3
ⓘ Ilmenite
Formula: Fe2+TiO3
ⓘ 'Limonite'
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Native Gold
Formula: Au
ⓘ Native Platinum
Formula: Pt
ⓘ Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
ⓘNative Platinum1.AF.10Pt
Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘHematite4.CB.05Fe2O3
ⓘIlmenite4.CB.05Fe2+TiO3
Group 9 - Silicates
ⓘZircon9.AD.30Zr(SiO4)
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Unclassified
ⓘ'Limonite'-

List of minerals for each chemical element

HHydrogen
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
OOxygen
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ HematiteFe2O3
Oⓘ IlmeniteFe2+TiO3
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ ZirconZr(SiO4)
AlAluminium
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
SiSilicon
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ ZirconZr(SiO4)
CaCalcium
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
TiTitanium
Tiⓘ IlmeniteFe2+TiO3
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
FeIron
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feⓘ HematiteFe2O3
Feⓘ IlmeniteFe2+TiO3
Feⓘ MagnetiteFe2+Fe23+O4
ZrZirconium
Zrⓘ ZirconZr(SiO4)
PtPlatinum
Ptⓘ Native PlatinumPt
AuGold
Auⓘ Native GoldAu

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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