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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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Uraninite from
Fisher Quarry, Topsham, Sagadahoc County, Maine, USA


03606960017369147714176.jpg
Uraninite

Fisher Quarry, Topsham, Sagadahoc County, Maine, USA
02639190017369147724162.jpg
Uraninite

Fisher Quarry, Topsham, Sagadahoc County, Maine, USA
01089350017363754196855.jpg
Uraninite

Fisher Quarry, Topsham, Sagadahoc County, Maine, USA
00919560017272023954159.jpg
Uraninite

Fisher Quarry, Topsham, Sagadahoc County, Maine, USA
03606960017369147714176.jpg
Uraninite

Fisher Quarry, Topsham, Sagadahoc County, Maine, USA
00919560017272023954159.jpg
Uraninite

Fisher Quarry, Topsham, Sagadahoc County, Maine, USA
Locality type:Quarry
Classification
Species:Uraninite
Formula:UO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Uraninite data
Locality Data:Click here to view Fisher Quarry, Topsham, Sagadahoc County, Maine, USA
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:36233
Long-form Identifier:1:3:36233:5
GUID (UUID V4):0
Nearest other occurrences of Uraninite
0.4km (0.2 miles) ⓘStaples Quarry, Topsham, Sagadahoc County, Maine, USA
1.1km (0.7 miles) ⓘSwamp #1 Quarry, Cathance River Nature Preserve, Topsham, Sagadahoc County, Maine, USA
1.1km (0.7 miles) ⓘSwamp #2 quarry, Cathance River Nature Preserve, Topsham, Sagadahoc County, Maine, USA
1.4km (0.9 miles) ⓘConsolidated #2 Quarry (Purington Quarry), Highland Green, Topsham, Sagadahoc County, Maine, USA
1.4km (0.9 miles) ⓘConsolidated #1 Quarry, Highland Green, Topsham, Sagadahoc County, Maine, USA
4.7km (3.0 miles) ⓘStandpipe Hill Quarries, Topsham, Sagadahoc County, Maine, USA
5.0km (3.1 miles) ⓘRussell Brothers Quarry, Topsham, Sagadahoc County, Maine, USA
9.0km (5.6 miles) ⓘCoombs Quarries, Bowdoin, Sagadahoc County, Maine, USA
20.3km (12.6 miles) ⓘTryon Mountain Quarries, Pownal, Cumberland County, Maine, USA
24.4km (15.2 miles) ⓘE. P. Thomas Quarry, Phippsburg, Sagadahoc County, Maine, USA
References
King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey.
Clara Brennan, Samuel M. Cameron, and Mona-Liza C. Sirbescu (2016) Crystallization of the Fisher Quarry Pegmatite, Sagadahoc Co., Maine: Preliminary Insights from Fluid Inclusions. in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado
 
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