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
Meadowview Prospect, East Fork Mining District, Custer County, Idaho, USA


Locality type:Prospect
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 Meadowview Prospect, East Fork Mining District, Custer County, Idaho, USA
Data Identifiers
Mindat Occurrence Record ID:449255
Long-form Identifier:1:3:449255:9
GUID (UUID V4):0
Nearest other occurrences of Hornblende Root Name Group
25.5km (15.9 miles) ⓘThe Great Centennial Placer, Robinson Bar Mining District, Custer County, Idaho, USA
26.3km (16.3 miles) ⓘCentauras Workings Placer, Robinson Bar Mining District, Custer County, Idaho, USA
40.9km (25.4 miles) ⓘJordan Creek Placer, Yankee Fork Mining District, Custer County, Idaho, USA
60.5km (37.6 miles) ⓘEagle Bird Mine (Viking Mines Inc.; Watkins Tunnel; Garfield Mine), Garfield Canyon, Little Wood River Mining District (Muldoon Mining District), Blaine County, Idaho, USA
69.5km (43.2 miles) ⓘChicago Mine (Bellevue King), Mineral Hill Mining District, Blaine County, Idaho, USA
89.0km (55.3 miles) ⓘDeadwood Mine, Deadwood Mining District, Valley County, Idaho, USA
References
 
and/or  
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