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
Hiddenite, Alexander County, North Carolina, USA


Locality type:Census-designated Place
Classification
Species:Sillimanite
Formula:Al2(SiO4)O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sillimanite data
Locality Data:Click here to view Hiddenite, Alexander County, North Carolina, USA
Data Identifiers
Mindat Occurrence Record ID:520593
Long-form Identifier:1:3:520593:6
GUID (UUID V4):0
Nearest other occurrences of Sillimanite
13.4km (8.4 miles) ⓘW. A. Campbell Prospect, Iredell County, North Carolina, USA
14.2km (8.8 miles) ⓘFox's Orchard Sillimanite Deposit, Iredell County, North Carolina, USA
17.0km (10.5 miles) ⓘEllendale School Sillimanite deposit, Alexander County, North Carolina, USA
27.7km (17.2 miles) ⓘDudley Shoals No. 2 Sillimanite Deposit, Caldwell County, North Carolina, USA
27.8km (17.3 miles) ⓘDudley Shoals No. 3 Sillimanite Deposit, Caldwell County, North Carolina, USA
28.5km (17.7 miles) ⓘDudley Shoals No. 1 Sillimanite Deposit, Caldwell County, North Carolina, USA
37.2km (23.1 miles) ⓘSaw Mills Sillimanite Deposit, Caldwell County, North Carolina, USA
41.1km (25.5 miles) ⓘCages Mountain Sillimanite Deposit, Caldwell County, North Carolina, USA
48.9km (30.4 miles) ⓘMachpelah Church Sillimanite Occurrence, Lincolnton, Lincoln County, North Carolina, USA
49.5km (30.7 miles) ⓘTallant prospect, Catawba County, North Carolina, USA
References
Palache, Charles, Davidson, S. C., Goranson, E. A. (1930) The hiddenite deposit in Alexander County, North Carolina. American Mineralogist, 15 (8). 280-302
 
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