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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Ophelia Tunnel (Gold Exploration; Moffat Tunnel), Cripple Creek Mining District, Teller County, Colorado, USAi
Regional Level Types
Ophelia Tunnel (Gold Exploration; Moffat Tunnel)Tunnel
Cripple Creek Mining DistrictMining District
Teller CountyCounty
ColoradoState
USACountry

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Latitude & Longitude (WGS84):
38° 44' 0'' North , 105° 10' 33'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Cripple Creek1,155 (2017)1.5km
Stratton644 (2006)2.8km
Victor389 (2017)4.1km
Midland156 (2011)13.9km
Divide127 (2011)23.2km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Lake George Gem & Mineral clubLake George, Colorado32km
Colorado Springs Mineral SocietyColorado Springs, Colorado33km
Canon City Geology ClubCanon City, Colorado33km
Mindat Locality ID:
67779
Long-form identifier:
mindat:1:2:67779:9
GUID (UUID V4):
0


Ref.: Min.Rec.: 36(2): 143-185.

The Ophelia tunnel, at an elevation of 9,268 feet, enters the west base of the (Gold) hill about three-eighths of a mile southwest of the Good Will portal and extends with a nearly east course under the south slope of Gold Hill, past Anaconda. This tunnel was over 1 1/4 miles in length in 1903, and if carried to completion will tap the mines of Bull Hill over 1,000 feet below the surface.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


8 valid minerals.

Detailed Mineral List:

'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Chalcanthite
Formula: CuSO4 · 5H2O
Ferrimolybdite
Formula: Fe2(MoO4)3 · nH2O
Galena
Formula: PbS
Ilsemannite
Formula: Mo3O8 · nH2O
Molybdenite
Formula: MoS2
Pyrite
Formula: FeS2
Quartz
Formula: SiO2
Sphalerite
Formula: ZnS

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Sphalerite2.CB.05aZnS
Galena2.CD.10PbS
Molybdenite2.EA.30MoS2
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Ilsemannite4.FJ.15Mo3O8 · nH2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Chalcanthite7.CB.20CuSO4 · 5H2O
Ferrimolybdite7.GB.30Fe2(MoO4)3 · nH2O
Unclassified
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2

List of minerals for each chemical element

HHydrogen
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
H ChalcanthiteCuSO4 · 5H2O
H FerrimolybditeFe2(MoO4)3 · nH2O
H IlsemanniteMo3O8 · nH2O
OOxygen
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
O ChalcanthiteCuSO4 · 5H2O
O FerrimolybditeFe2(MoO4)3 · nH2O
O IlsemanniteMo3O8 · nH2O
O QuartzSiO2
FFluorine
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
MgMagnesium
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
SiSilicon
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Si QuartzSiO2
SSulfur
S ChalcanthiteCuSO4 · 5H2O
S GalenaPbS
S MolybdeniteMoS2
S PyriteFeS2
S SphaleriteZnS
KPotassium
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
TiTitanium
Ti BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeIron
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fe FerrimolybditeFe2(MoO4)3 · nH2O
Fe PyriteFeS2
CuCopper
Cu ChalcanthiteCuSO4 · 5H2O
ZnZinc
Zn SphaleriteZnS
MoMolybdenum
Mo FerrimolybditeFe2(MoO4)3 · nH2O
Mo IlsemanniteMo3O8 · nH2O
Mo MolybdeniteMoS2
PbLead
Pb GalenaPbS

Other Regions, Features and Areas containing this locality


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.

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