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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Sillimanite from
Thomas Mine (Balsam Gap kyanite location; Parkway kyanite location), Buncombe County, North Carolina, USA


Locality type:Mine
Classification
Species:Sillimanite
Formula:Al2(SiO4)O
Comments:A small pegmatite containing both kyanite and sillimanite as primary minerals.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sillimanite data
Locality Data:Click here to view Thomas Mine (Balsam Gap kyanite location; Parkway kyanite location), Buncombe County, North Carolina, USA
Data Identifiers
Mindat Occurrence Record ID:44646
Long-form Identifier:1:3:44646:0
GUID (UUID V4):0
Nearest other occurrences of Sillimanite
36.3km (22.5 miles) ⓘYoungs Mountain deposit, Rutherford County, North Carolina, USA
38.3km (23.8 miles) ⓘFletcher Limestone Company Quarry, Henderson County, North Carolina, USA
39.8km (24.8 miles) ⓘUnnamed Marble occurrence [1], Polk County, North Carolina, USA
50.6km (31.4 miles) ⓘJ.C. Mills Mine (Mill's Mine; Mills's Mine), Brindletown, Burke County, North Carolina, USA
56.0km (34.8 miles) ⓘFreeman Mine, Tuxedo, Zirconia Pegmatite Mining District, Henderson County, North Carolina, USA
56.7km (35.3 miles) ⓘJones Mine, Zirconia, Zirconia Pegmatite Mining District, Henderson County, North Carolina, USA
67.7km (42.1 miles) ⓘSmith Cliff Sillimanite deposit, Burke County, North Carolina, USA
73.0km (45.3 miles) ⓘGettys No. 1 Mine, Cleveland County, North Carolina, USA
73.2km (45.5 miles) ⓘCages Mountain Sillimanite Deposit, Caldwell County, North Carolina, USA
77.6km (48.2 miles) ⓘSaw Mills Sillimanite Deposit, Caldwell County, North Carolina, USA
References
Wood, Keith Yates (1996)Petrogenesis And Geochemistry Of Kyanite-Bearing Pegmatites in The Buncombe Pegmatite District, North Carolina : Virginia Polytechnic Institute and State University
 
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