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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Quartz from
Robinson Mine, Concord, Somerset County, Maine, USA


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Robinson Mine, Concord, Somerset County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:42612
Long-form Identifier:1:3:42612:9
GUID (UUID V4):0
Nearest other occurrences of Quartz
14.1km (8.8 miles) ⓘNorth Anson Gorge Falls, North Anson, Anson, Somerset County, Maine, USA
28.3km (17.6 miles) ⓘRapid Stream, Mount Abram, Franklin County, Maine, USA
28.8km (17.9 miles) ⓘCentral Maine Power Company Dam, Skowhegan, Somerset County, Maine, USA
31.2km (19.4 miles) ⓘJim Pond Formation on Sugarloaf Mountain, Carrabassett Valley, Franklin County, Maine, USA
37.0km (23.0 miles) ⓘSandy River, Phillips, Franklin County, Maine, USA
38.5km (23.9 miles) ⓘOrbeton Stream, Madrid, Franklin County, Maine, USA
46.1km (28.7 miles) ⓘPorter Mine, Saint Albans, Somerset County, Maine, USA
48.5km (30.1 miles) ⓘSmalls Falls, E Township, Franklin County, Maine, USA
49.8km (31.0 miles) ⓘBlueberry Mountain, 6 North of Weld, Franklin County, Maine, USA
54.0km (33.6 miles) ⓘNile Brook Gold locality, Dallas Plantation, Franklin County, Maine, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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