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
E.E. Smith Mine, Alexandria, Grafton County, New Hampshire, USA


Locality type:Mine
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 E.E. Smith Mine, Alexandria, Grafton County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:32363
Long-form Identifier:1:3:32363:7
GUID (UUID V4):0
Nearest other occurrences of Rockbridgeite
11.8km (7.4 miles) ⓘKeyes Mica Quarries, Orange, Grafton County, New Hampshire, USA
15.4km (9.6 miles) ⓘPalermo No. 1 Mine, Groton, Grafton County, New Hampshire, USA
15.6km (9.7 miles) ⓘPalermo No. 2 Mine, Groton, Grafton County, New Hampshire, USA
15.8km (9.8 miles) ⓘFletcher Mine, Groton, Grafton County, New Hampshire, USA
44.2km (27.5 miles) ⓘChandlers Mill Quarry, Newport, Sullivan County, New Hampshire, USA
63.6km (39.5 miles) ⓘFitzgibbons Mine, Alstead, Cheshire County, New Hampshire, USA
65.6km (40.8 miles) ⓘParker Mountain Mine, Strafford, Strafford County, New Hampshire, USA
73.9km (45.9 miles) ⓘChickering Mine, Walpole, Cheshire County, New Hampshire, USA
88.5km (55.0 miles) ⓘEstes Quarry, West Baldwin, Baldwin, Cumberland County, Maine, USA
References
Smith, Arthur E. (2005) New Hampshire mineral locality index. Rocks & Minerals, 80 (4) 242-261 doi:10.3200/rmin.80.4.242-261
 
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