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
Keyes Mica Quarries, Orange, Grafton County, New Hampshire, USA


Locality type:Quarry
Classification
Species:Beryl var: Heliodor
Formula:Be3Al2(Si6O18)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Heliodor data
Locality Data:Click here to view Keyes Mica Quarries, Orange, Grafton County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:653177
Long-form Identifier:1:3:653177:5
GUID (UUID V4):0
Nearest other occurrences of Heliodor
7.7km (4.8 miles) ⓘPalermo No. 2 Mine, Groton, Grafton County, New Hampshire, USA
7.8km (4.8 miles) ⓘPalermo No. 1 Mine, Groton, Grafton County, New Hampshire, USA
9.1km (5.7 miles) ⓘCharles Davis Mine, Groton, Grafton County, New Hampshire, USA
11.6km (7.2 miles) ⓘPattuck Quarry, Alexandria, Grafton County, New Hampshire, USA
12.0km (7.4 miles) ⓘRuggles Mine, Grafton, Grafton County, New Hampshire, USA
15.5km (9.6 miles) ⓘMcGinnis Mine (McGinnis Mica Mine; Wilcher and Pilsbury Mine), Wentworth, Grafton County, New Hampshire, USA
25.3km (15.7 miles) ⓘClement Mine, Warren, Grafton County, New Hampshire, USA
44.8km (27.9 miles) ⓘChandlers Mill Quarry, Newport, Sullivan County, New Hampshire, USA
63.6km (39.5 miles) ⓘBeryl Mountain Quarry, South Acworth, Acworth, Sullivan County, New Hampshire, USA
73.9km (45.9 miles) ⓘIsland Mine, Alstead, Cheshire County, New Hampshire, 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
Thompson, Woodrow B., Falster, Alexander U., Mortimer, Thomas J. (2022) The Keyes Mica Mines, Orange, Grafton County, New Hampshire. Rocks & Minerals, 97 (4) 302-329 doi:10.1080/00357529.2022.2053622
 
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