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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Beraunite from
State Forest Quarry No. 2, Cobalt, East Hampton, Middlesex County, Connecticut, USA


Locality type:Quarry
Classification
Species:Beraunite
Formula:Fe63+(PO4)4O(OH)4 · 6H2O
Comments:reported by Dick Schooner, no details in the reference. Visually identified by Van King from posted photographs but an XRD test made in the National Museum Prague (dr. Jiri Sejkora) of the green material with some matrix found "no beraunite but something similar to messelite" and apatite, which are the matrix species. EDS analysis shows green mineral is mitridatite.
Habit:coatings
Colour:green
Confirmation
Validity:Erroneously Reported
Data
Mineral Data:Click here to view Beraunite data
Locality Data:Click here to view State Forest Quarry No. 2, Cobalt, East Hampton, Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:708574
Long-form Identifier:1:3:708574:1
GUID (UUID V4):0
Nearest other occurrences of Beraunite
51.0km (31.7 miles) ⓘState Routes 8 and 118 interchange, Harwinton, Litchfield County, Connecticut, USA
References
Moritz, Harold (n.d.) Personal Communication.
Januzzi (1976) p.234-5.
 
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