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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Heliodor from
Chickering Mine, Walpole, Cheshire County, New Hampshire, USA


Locality type:Mine
Classification
Species:Beryl var: Heliodor
Formula:Be3Al2(Si6O18)
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Heliodor data
Locality Data:Click here to view Chickering Mine, Walpole, Cheshire County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:690232
Long-form Identifier:1:3:690232:2
GUID (UUID V4):0
Nearest other occurrences of Heliodor
8.7km (5.4 miles) ⓘIsland Mine, Alstead, Cheshire County, New Hampshire, USA
9.4km (5.9 miles) ⓘKirk No. 2 Quarry, Gilsum, Cheshire County, New Hampshire, USA
12.9km (8.0 miles) ⓘBeryl Mountain Quarry, South Acworth, Acworth, Sullivan County, New Hampshire, USA
32.2km (20.0 miles) ⓘChandlers Mill Quarry, Newport, Sullivan County, New Hampshire, USA
47.7km (29.7 miles) ⓘReynolds Mine (Beryl Hill Mine), Royalston, Worcester County, Massachusetts, USA
64.6km (40.1 miles) ⓘRuggles Mine, Grafton, Grafton County, New Hampshire, USA
69.4km (43.1 miles) ⓘPearl Hill, Fitchburg, Worcester County, Massachusetts, USA
73.0km (45.4 miles) ⓘRollstone Hill Quarries, Fitchburg, Worcester County, Massachusetts, USA
73.5km (45.6 miles) ⓘPattuck Quarry, Alexandria, Grafton County, New Hampshire, USA
76.4km (47.5 miles) ⓘKeyes Mica Quarries, Orange, Grafton County, New Hampshire, USA
References
P Cristofono collection 2010
 
and/or  
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