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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Bornite from
Acton Mine (Acton Consolidated Mine), Acton, York County, Maine, USA


Locality type:Mine
Classification
Species:Bornite
Formula:Cu5FeS4
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Bornite data
Locality Data:Click here to view Acton Mine (Acton Consolidated Mine), Acton, York County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:33055
Long-form Identifier:1:3:33055:8
GUID (UUID V4):0
Nearest other occurrences of Bornite
0.1km (0.1 miles) ⓘBoston-Acton mine, Acton, York County, Maine, USA
1.2km (0.8 miles) ⓘDirigo Silver mine, Acton, York County, Maine, USA
23.2km (14.4 miles) ⓘMineral Hill Mine, Wakefield, Carroll County, New Hampshire, USA
77.3km (48.0 miles) ⓘJackson tin mines, Jackson, Carroll County, New Hampshire, USA
77.6km (48.2 miles) ⓘChipman Mine (Merrimac Mine; Newburyport lead-silver mine), Newbury, Essex County, Massachusetts, USA
84.8km (52.7 miles) ⓘPalermo No. 1 Mine, Groton, Grafton County, New Hampshire, USA
84.8km (52.7 miles) ⓘCharles Davis Mine, Groton, Grafton County, New Hampshire, USA
85.0km (52.8 miles) ⓘPalermo No. 2 Mine, Groton, Grafton County, New Hampshire, USA
88.3km (54.9 miles) ⓘRuggles Mine, Grafton, Grafton County, New Hampshire, USA
References
W. B. Thompson, D. L. Joyner, R. G. Woodman, and V. T. King (2005) A Collector's Guide to Maine Mineral Localities. Maine Geological Survey Bulletin 41
 
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