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
Gambo Falls Staurolite locality, Gorham, Cumberland County, Maine, USA


Locality type:Deposit
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 Gambo Falls Staurolite locality, Gorham, Cumberland County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:36745
Long-form Identifier:1:3:36745:5
GUID (UUID V4):0
Nearest other occurrences of Sillimanite
3.7km (2.3 miles) ⓘDundee Falls Kyanite locality, Gorham, Cumberland County, Maine, USA
10.4km (6.4 miles) ⓘOak Hill area, Standish, Cumberland County, Maine, USA
35.4km (22.0 miles) ⓘSymmes Pond Syenite, Straw Hill occurrence, Newfield, York County, Maine, USA
35.8km (22.3 miles) ⓘAbbott Mountain Syenite, Newfield Wildlife Management Area locality, Shapleigh, York County, Maine, USA
48.7km (30.3 miles) ⓘSmall Point, Phippsburg, Sagadahoc County, Maine, USA
52.8km (32.8 miles) ⓘSabbatus Mountain, Wales, Androscoggin County, Maine, USA
53.4km (33.2 miles) ⓘBay Point andalusite localities, Georgetown, Sagadahoc County, Maine, USA
62.2km (38.7 miles) ⓘWitt Hill Chrysoberyl locality, Greenwood, Oxford County, Maine, USA
63.7km (39.6 miles) ⓘVerrill locality, Stoneham, Oxford County, Maine, USA
67.5km (41.9 miles) ⓘState Route 4 road cut, Turner, Androscoggin County, Maine, USA
References
 
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