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


Locality type:Quarry
Classification
Species:Roscherite
Formula:Ca2Mn52+Be4(PO4)6(OH)4 · 6H2O
Comments:Historically, roscherite was thought to be "confirmed" by its appearance, but with the discovery of greifensteinite, it appears that roscherite has yet to be verified while a verified member of the group, greifensteinite (Frank Hawthorn, University of Manitoba, Canada), is believed to be the dominant member of the group present at Black Mountain.
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Roscherite data
Locality Data:Click here to view Black Mountain Quarry, Rumford, Oxford County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:28666
Long-form Identifier:1:3:28666:4
GUID (UUID V4):0
Nearest other occurrences of Roscherite
7.5km (4.7 miles) ⓘNevel Quarry, 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
36.9km (22.9 miles) ⓘBennett Quarry, Buckfield, Oxford County, Maine, USA
37.7km (23.4 miles) ⓘMount Mica Quarry, Paris, Oxford County, Maine, USA
81.7km (50.8 miles) ⓘEstes Quarry, West Baldwin, Baldwin, Cumberland County, Maine, USA
References
King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey.
King, Vandall T. (2000) Mineralogy of Maine Vol. 2 - Mining History, Gems, and Geology. Maine Geological Survey.
 
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