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
Mosquito Mountain Granite Quarry, Frankfort, Waldo County, Maine, USA


Locality type:Quarry
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 Mosquito Mountain Granite Quarry, Frankfort, Waldo County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:465705
Long-form Identifier:1:3:465705:7
GUID (UUID V4):0
Nearest other occurrences of Hornblende Root Name Group
25.7km (16.0 miles) ⓘCape Rosier Mine (Callahan Mine; Rosier Consolidated Mine), Brooksville, Blue Hill - Castine Mining District, Hancock County, Maine, USA
47.5km (29.5 miles) ⓘRoute 105 road cut, Appleton, Knox County, Maine, USA
51.1km (31.7 miles) ⓘSheepscot Pond locality, Palermo, Waldo County, Maine, USA
62.5km (38.8 miles) ⓘCatherine Mountain Molybdenite prospect, Catherine Mountain, T10 SD, Hancock County, Maine, USA
66.2km (41.2 miles) ⓘGouldsborough Mine (Gouldsboro Mine), Gouldsboro, Hancock County, Maine, USA
75.5km (46.9 miles) ⓘCherryfield Mine, Milbridge, Washington County, Maine, USA
94.4km (58.7 miles) ⓘRobinson Mine, Concord, Somerset County, Maine, USA
99.3km (61.7 miles) ⓘKatahdin Iron Works Mine, Katahdin Iron Works, Piscataquis County, Maine, USA
References
 
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