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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Lepidolite from
Bob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA


02967790017363540364825.jpg
Lepidolite

Bob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
07490430017272016631324.jpg
Lepidolite

Bob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
09108870017272016668370.jpg
Lepidolite, etc.

Bob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
05724010017363326693790.jpg
Lepidolite, etc.

Bob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
06709830017362412384349.jpg
Lepidolite

Bob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
00768120017369822287568.jpg
Lepidolite

Bob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
05889690017369822286415.jpg
Lepidolite, etc.

Bob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
05724010017363326693790.jpg
Lepidolite, etc.

Bob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
02967790017363540364825.jpg
Lepidolite

Bob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
07490430017272016631324.jpg
Lepidolite

Bob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
09108870017272016668370.jpg
Lepidolite, etc.

Bob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
04419560017546465009508.jpg
Lepidolite, etc.

Bob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
Locality type:Mine
Classification
Species:'Lepidolite' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Quartz14
Elbaite3
Fluorapatite1
Albite1
Tourmaline1
Data
Mineral Data:Click here to view Lepidolite data
Locality Data:Click here to view Bob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
Photo GalleryView Gallery (9 photos)
Data Identifiers
Mindat Occurrence Record ID:49732
Long-form Identifier:1:3:49732:1
GUID (UUID V4):0
Nearest other occurrences of Lepidolite
3.5km (2.2 miles) ⓘPeerless Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
4.4km (2.7 miles) ⓘEtta Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
5.0km (3.1 miles) ⓘHugo Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
8.3km (5.2 miles) ⓘWood Tin mine, Harney City, Pennington County, South Dakota, USA
9.1km (5.7 miles) ⓘTiger mine, Hayward, Pennington County, South Dakota, USA
9.2km (5.7 miles) ⓘStar Lode, Keystone Mining District, Pennington County, South Dakota, USA
17.7km (11.0 miles) ⓘAgnew pegmatite, Custer Mining District, Custer County, South Dakota, USA
17.8km (11.1 miles) ⓘShamrock No. 1 Lode Mine, Custer, Custer Mining District, Custer County, South Dakota, USA
19.0km (11.8 miles) ⓘHot Shot mine, Custer, Custer Mining District, Custer County, South Dakota, USA
19.6km (12.2 miles) ⓘCuster Mountain lode (Snookum mine), Custer, Custer Mining District, Custer County, South Dakota, USA
References
Rocks & Min.:10:147 & 60:112,116.
Meeves, H.; Harrer, C.M.; Salsbury, M.H.; Konselman, A.S; Shannon, S.S. Jnr. (1966) Reconnaissance of beryllium-bearing pegmatite deposits in six western states: Arizona, Colorado, New Mexico, South Dakota, Utah, and Wyoming. Bureau of Mines Information Circular 8298. United States Department of the Interior 34 pp.p.33 - (Table A-1)
 
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