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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Hornblende Root Name Group from
Cape Rosier Mine (Callahan Mine; Rosier Consolidated Mine), Brooksville, Blue Hill - Castine Mining District, Hancock County, Maine, USA


Locality type:Mine
Classification
Species:'Hornblende Root Name Group' (not an IMA approved species)
Formula:◻Ca2(C42+C3+)(AlSi7O22)W2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Hornblende Root Name Group data
Locality Data:Click here to view Cape Rosier Mine (Callahan Mine; Rosier Consolidated Mine), Brooksville, Blue Hill - Castine Mining District, Hancock County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:31403
Long-form Identifier:1:3:31403:7
GUID (UUID V4):0
Nearest other occurrences of Hornblende Root Name Group
25.7km (16.0 miles) ⓘMosquito Mountain Granite Quarry, Frankfort, Waldo County, Maine, USA
41.3km (25.7 miles) ⓘRoute 105 road cut, Appleton, Knox County, Maine, USA
49.6km (30.8 miles) ⓘSheepscot Pond locality, Palermo, Waldo County, Maine, USA
62.7km (39.0 miles) ⓘGouldsborough Mine (Gouldsboro Mine), Gouldsboro, Hancock County, Maine, USA
64.9km (40.3 miles) ⓘCatherine Mountain Molybdenite prospect, Catherine Mountain, T10 SD, Hancock County, Maine, USA
76.1km (47.3 miles) ⓘCherryfield Mine, Milbridge, Washington County, Maine, USA
References
 
and/or  
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