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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Rockbridgeite from
Black Mountain Quarry, Rumford, Oxford County, Maine, USA


Locality type:Quarry
Classification
Species:Rockbridgeite
Formula:(Fe2+0.5Fe3+0.5)2Fe33+(PO4)3(OH)5
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Rockbridgeite data
Locality Data:Click here to view Black Mountain Quarry, Rumford, Oxford County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:28664
Long-form Identifier:1:3:28664:6
GUID (UUID V4):0
Nearest other occurrences of Rockbridgeite
4.1km (2.5 miles) ⓘRed Hill quarries, Rumford, Oxford County, Maine, USA
7.5km (4.6 miles) ⓘBell pit, Newry, Oxford County, Maine, USA
7.5km (4.7 miles) ⓘNevel Quarry, Newry, Oxford County, Maine, USA
7.6km (4.7 miles) ⓘCrooker Gem Pegmatite Quarries, Newry, Oxford County, Maine, USA
7.7km (4.8 miles) ⓘDunton Gem Quarry, Newry, Oxford County, Maine, USA
29.4km (18.3 miles) ⓘEmmons Quarry, Uncle Tom Mountain, Greenwood, Oxford County, Maine, USA
35.2km (21.9 miles) ⓘRyerson Hill Quarries, Paris, Oxford County, Maine, USA
63.5km (39.4 miles) ⓘBerry-Havey Quarry, Poland, Androscoggin County, Maine, USA
81.7km (50.8 miles) ⓘEstes Quarry, West Baldwin, Baldwin, Cumberland County, Maine, USA
References
 
and/or  
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