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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Mica Group from
North Castine mine, Castine, Blue Hill - Castine Mining District, Hancock County, Maine, USA


Locality type:Mine
Classification
Species:'Mica Group' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Mica Group data
Locality Data:Click here to view North Castine mine, Castine, Blue Hill - Castine Mining District, Hancock County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:43266
Long-form Identifier:1:3:43266:1
GUID (UUID V4):0
Nearest other occurrences of Mica Group
0.3km (0.2 miles) ⓘEmerson Mine, Castine, Blue Hill - Castine Mining District, Hancock County, Maine, USA
1.9km (1.2 miles) ⓘJones Mine, Brooksville, Blue Hill - Castine Mining District, Hancock County, Maine, USA
1.9km (1.2 miles) ⓘPerkins mine, Brooksville, Blue Hill - Castine Mining District, Hancock County, Maine, USA
2.7km (1.7 miles) ⓘHercules Mine, Penobscot, Hancock County, Maine, USA
3.7km (2.3 miles) ⓘHighland Mine, Penobscot, Hancock County, Maine, USA
3.7km (2.3 miles) ⓘLimeburner prospect (Lymburner Prospect), Penobscot, Hancock County, Maine, USA
References
 
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