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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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Autunite from
Parker Mountain Mine, Strafford, Strafford County, New Hampshire, USA


02531040017369201369507.jpg
Autunite

Parker Mountain Mine, Strafford, Strafford County, New Hampshire, USA
02531040017369201369507.jpg
Autunite

Parker Mountain Mine, Strafford, Strafford County, New Hampshire, USA
08014580017369201365512.jpg
Autunite

Parker Mountain Mine, Strafford, Strafford County, New Hampshire, USA
Locality type:Mine
Classification
Species:Autunite
Formula:Ca(UO2)2(PO4)2 · 10-12H2O
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Uraninite2
Albite2
- var Cleavelandite2
Data
Mineral Data:Click here to view Autunite data
Locality Data:Click here to view Parker Mountain Mine, Strafford, Strafford County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:50824
Long-form Identifier:1:3:50824:7
GUID (UUID V4):0
Nearest other occurrences of Autunite
60.0km (37.3 miles) ⓘBerry Ledge, Cornish, York County, Maine, USA
65.6km (40.8 miles) ⓘE.E. Smith Mine, Alexandria, Grafton County, New Hampshire, USA
65.7km (40.8 miles) ⓘBullock Quarry, E.E. Smith Mine, Alexandria, Grafton County, New Hampshire, USA
69.5km (43.2 miles) ⓘEstes Quarry, West Baldwin, Baldwin, Cumberland County, Maine, USA
74.1km (46.1 miles) ⓘI-93/Dascomb Rd. area, Andover, Essex County, Massachusetts, USA
74.9km (46.5 miles) ⓘFletcher Mine, Groton, Grafton County, New Hampshire, USA
75.0km (46.6 miles) ⓘRuggles Mine, Grafton, Grafton County, New Hampshire, USA
77.3km (48.0 miles) ⓘKeyes Mica Quarries, Orange, Grafton County, New Hampshire, USA
77.9km (48.4 miles) ⓘPalermo No. 1 Mine, Groton, Grafton County, New Hampshire, USA
78.4km (48.7 miles) ⓘCharles Davis Mine, Groton, Grafton County, New Hampshire, USA
References
Rocks & Minerals 80:4 pp234-241
Switzer, George (1938) The paragenesis of the Center Strafford, New Hampshire, pegmatite. American Mineralogist, 23 (11) 811-820
Cameron, Eugene N., Larrabee, David M., McNair, Andrew H., Page, James J., Stewart, Glen W., Shainin, Vincent E. (1954) Pegmatite Investigations, 1942-45, in New England. Geological Survey Professional Paper 255. US Geological Survey doi:10.3133/pp255
Rocks & Min. 39:355 (1964)
 
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