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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Sillimanite from
Chandler Mine, Raymond, Rockingham County, New Hampshire, USA


Locality type:Mine
Classification
Species:Sillimanite
Formula:Al2(SiO4)O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sillimanite data
Locality Data:Click here to view Chandler Mine, Raymond, Rockingham County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:653203
Long-form Identifier:1:3:653203:1
GUID (UUID V4):0
Nearest other occurrences of Sillimanite
32.1km (20.0 miles) ⓘParker Mountain Mine, Strafford, Strafford County, New Hampshire, USA
38.2km (23.7 miles) ⓘMarble Ridge, North Andover, Essex County, Massachusetts, USA
52.6km (32.7 miles) ⓘAvery Hill, Alton, Belknap County, New Hampshire, USA
57.7km (35.8 miles) ⓘBelknap Mts (Gunstock Mts; Suncook Mts), Gilford, Belknap County, New Hampshire, USA
59.4km (36.9 miles) ⓘOld lime quarries, Littleton, Middlesex County, Massachusetts, USA
69.2km (43.0 miles) ⓘBolton Lime Quarries (Bolton Quarry; Whitcomb Quarry; Hildreth Quarry), Bolton, Worcester County, Massachusetts, USA
72.0km (44.7 miles) ⓘOsgood Graphite Mine, Nelson, Cheshire County, New Hampshire, USA
72.6km (45.1 miles) ⓘAbbott Mountain Syenite, Newfield Wildlife Management Area locality, Shapleigh, York County, Maine, USA
73.5km (45.7 miles) ⓘMonadnock Mountain, Jaffrey, Cheshire County, New Hampshire, USA
78.2km (48.6 miles) ⓘSymmes Pond Syenite, Straw Hill occurrence, Newfield, York 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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