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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Phillip and Phyllis Lodes, Keystone Mining District, Pennington County, South Dakota, USAi
Regional Level Types
Phillip and Phyllis LodesGroup of Lodes
Keystone Mining DistrictMining District
Pennington CountyCounty
South DakotaState
USACountry

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Latitude & Longitude (WGS84):
43° 53' 16'' North , 103° 22' 49'' West
Latitude & Longitude (decimal):
43.88805,-103.38055
GeoHash:
G#: 9xy3xt8d6
GRN:
N30W54
Type:
Group of Lodes
Köppen climate type:
BSk : Cold semi-arid (steppe) climate
Nearest Settlements:
PlacePopulationDistance
Keystone343 (2017)3.1km
Colonial Pine Hills2,493 (2017)14.3km
Hermosa392 (2017)16.1km
Hill City995 (2017)16.3km
Custer1,952 (2017)22.1km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Western Dakota Gem & Mineral SocietyRapid City, South Dakota25km
Mindat Locality ID:
122011
Long-form identifier:
mindat:1:2:122011:0
GUID (UUID V4):
0
Other/historical names associated with this locality:
Watson Feldspar Mine


REF:Deposit:: U. S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707,PP.83-84
Deposit:: GUITERAS,J.R.,USBM INFO.CIRC.7112,1940,P.27,PP.83-84
Deposit:: GUITERAS,J.R.,USBM INFO.CIRC.7112,1940,P.27
Deposit:: ROBERTS, W.L., AND RAPP, GEORGE, 1965, MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOG
Commodities (Major) - Feldspar; (Trace) - Mica, Tin, Beryllium
Development Status: Past Producer
Host Rock: Pegmatite

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


5 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
ⓘCassiterite4.DB.05SnO2
Group 8 - Phosphates, Arsenates and Vanadates
ⓘHeterosite8.AB.10(Fe3+,Mn3+)PO4
ⓘTriphylite8.AB.10LiFe2+PO4
Group 9 - Silicates
ⓘBeryl9.CJ.05Be3Al2(Si6O18)
Unclassified
ⓘ'Mica Group'-
ⓘ'K Feldspar'-

List of minerals for each chemical element

LiLithium
Liⓘ TriphyliteLiFe2+PO4
BeBeryllium
Beⓘ BerylBe3Al2(Si6O18)
OOxygen
Oⓘ BerylBe3Al2(Si6O18)
Oⓘ CassiteriteSnO2
Oⓘ Heterosite(Fe3+,Mn3+)PO4
Oⓘ QuartzSiO2
Oⓘ TriphyliteLiFe2+PO4
AlAluminium
Alⓘ BerylBe3Al2(Si6O18)
SiSilicon
Siⓘ BerylBe3Al2(Si6O18)
Siⓘ QuartzSiO2
PPhosphorus
Pⓘ Heterosite(Fe3+,Mn3+)PO4
Pⓘ TriphyliteLiFe2+PO4
MnManganese
Mnⓘ Heterosite(Fe3+,Mn3+)PO4
FeIron
Feⓘ Heterosite(Fe3+,Mn3+)PO4
Feⓘ TriphyliteLiFe2+PO4
SnTin
Snⓘ CassiteriteSnO2

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

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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