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Fluorapatite from
Helen Beryl Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA


Locality type:Mine
Classification
Species:Fluorapatite
Formula:Ca5(PO4)3F
Comments:Occurs in pegmatite.
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Quartz1
Microcline1
Beryl1
Schorl1
Data
Mineral Data:Click here to view Fluorapatite data
Locality Data:Click here to view Helen Beryl Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
Data Identifiers
Mindat Occurrence Record ID:68291
Long-form Identifier:1:3:68291:0
GUID (UUID V4):0
Nearest other occurrences of Fluorapatite
2.2km (1.4 miles) ⓘTip Top Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
4.1km (2.6 miles) ⓘLithia Lode, Custer Mining District, Custer County, South Dakota, USA
4.2km (2.6 miles) ⓘTin Mountain Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
6.2km (3.8 miles) ⓘRoss Mine, Berne, Custer Mining District, Custer County, South Dakota, USA
7.2km (4.5 miles) ⓘWonder lode (Duncan's Little Wonder mine), Custer, Custer Mining District, Custer County, South Dakota, USA
10.0km (6.2 miles) ⓘCrown Mine (McMackin Mine), Custer, Custer Mining District, Custer County, South Dakota, USA
10.8km (6.7 miles) ⓘRoosevelt group (Rough Rider), Custer, Custer Mining District, Custer County, South Dakota, USA
11.1km (6.9 miles) ⓘWhite Elephant Mine, Cicero Peak, Pringle, Custer Mining District, Custer County, South Dakota, USA
11.5km (7.1 miles) ⓘCuster Mountain lode (Snookum mine), Custer, Custer Mining District, Custer County, South Dakota, USA
12.2km (7.6 miles) ⓘClimax mica mine, Custer, Custer Mining District, Custer County, South Dakota, USA
References
Rocks & Minerals: 60: 117.
Staatz, M. H.
Norton, J. J.
Page, Lincoln R., Stocking, Hobart E., Smith, Harriet B. (1956) Contributions to the geology of uranium and thorium by the United States Geological Survey and Atomic Energy Commission for the United Nations International Conference on Peaceful Uses of Atomic Energy, Geneva, Switzerland, 1955. Professional Paper 300. US Geological Survey doi:10.3133/pp300
Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.
 
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