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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Dickite from
Isabell Mine (Isabell Prospect; Isabell Hill Mine; Craig Mine), Lake Greeson, Pike County, Arkansas, USA


Locality type:Mine
Classification
Species:Dickite
Formula:Al2(Si2O5)(OH)4
Comments:Occurs in Gap Ridge Sandstone.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Dickite data
Locality Data:Click here to view Isabell Mine (Isabell Prospect; Isabell Hill Mine; Craig Mine), Lake Greeson, Pike County, Arkansas, USA
Data Identifiers
Mindat Occurrence Record ID:69718
Long-form Identifier:1:3:69718:9
GUID (UUID V4):0
Nearest other occurrences of Dickite
0.8km (0.5 miles) ⓘU.S. Mercury Company Mine, Lake Greeson, Pike County, Arkansas, USA
1.0km (0.6 miles) ⓘYantis Mine, Skelton Mountain, Lake Greeson, Pike County, Arkansas, USA
1.1km (0.7 miles) ⓘYenglin Mine, Lake Greeson, Pike County, Arkansas, USA
1.1km (0.7 miles) ⓘHales Mine (Ajax Mine; Hales Mining and Development Co; Norton and Wright; Ajax Mercury Co; Hales) Lake Greeson, Pike County, Arkansas, USA
1.4km (0.9 miles) ⓘParnell Hill Mine, Parnell Hill, Lake Greeson, Pike County, Arkansas, USA
2.8km (1.8 miles) ⓘLowery and James Mine (Lowrey Lease; Lowrey and James), Lake Greeson, Pike County, Arkansas, USA
2.8km (1.8 miles) ⓘParker prospect (Big Six Mining Company prospect), Lake Greeson, Pike County, Arkansas, USA
2.8km (1.8 miles) ⓘParker Hill Mine, Lake Greeson, Pike County, Arkansas, USA
3.0km (1.8 miles) ⓘMercury District of Southwest Arkansas, Pike County, Arkansas, USA
3.5km (2.2 miles) ⓘEast Gap Ridge Mine, Pike County, Arkansas, USA
References
Rocks & Minerals (1988): 63: 115.
Clardy & Bush(1976).
 
and/or  
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