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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Tourmaline from
Bear Basin Mines, Buena Vista Mining District, King County, Washington, USA


Locality type:Mine
Classification
Species:'Tourmaline' (not an IMA approved species)
Formula:AD3G6(T6O18)(BO3)3X3Z
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Albite
Chlorite Group
Quartz
Data
Mineral Data:Click here to view Tourmaline data
Locality Data:Click here to view Bear Basin Mines, Buena Vista Mining District, King County, Washington, USA
Data Identifiers
Mindat Occurrence Record ID:421543
Long-form Identifier:1:3:421543:1
GUID (UUID V4):0
Nearest other occurrences of Tourmaline
4.6km (2.8 miles) ⓘUna Mine, Miller River Mining District, King County, Washington, USA
6.5km (4.0 miles) ⓘApex Mine, Money Creek Mining District, King County, Washington, USA
7.2km (4.5 miles) ⓘDamon and Pythias Mine, Money Creek Mining District, King County, Washington, USA
9.2km (5.7 miles) ⓘRainy Mine, Middle Fork of the Snoqualmie River, Snoqualmie Mining District, King County, Washington, USA
13.8km (8.6 miles) ⓘSouth Bessemer Mountain, Middle Fork of the Snoqualmie River, Snoqualmie Mining District, King County, Washington, USA
17.7km (11.0 miles) ⓘMount Roosevelt, Middle Fork of the Snoqualmie River, Snoqualmie Mining District, King County, Washington, USA
20.6km (12.8 miles) ⓘDutch Miller Mine, Middle Fork of the Snoqualmie River, Snoqualmie Mining District, King County, Washington, USA
21.6km (13.5 miles) ⓘBald Hornet Prospect, Snoqualmie Mining District, King County, Washington, USA
21.7km (13.5 miles) ⓘMount Si Copper Prospect, Snoqualmie Mining District, King County, Washington, USA
22.0km (13.7 miles) ⓘCrater Lake Canyon, Snoqualmie Mining District, King County, Washington, USA
References
Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.p.38
 
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