Vote for your favorite mineral in #MinCup26! - Hafnon vs. Putnisite
It's a pair of tiny minerals of unusual chemistry as orange Hafnon battles with purple Putnisite.
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Tourmaline from
Wilhelm Mine, Custer Mining District, Custer County, South Dakota, USA


Locality type:Mine
Classification
Species:'Tourmaline' (not an IMA approved species)
Formula:AD3G6(T6O18)(BO3)3X3Z
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tourmaline data
Locality Data:Click here to view Wilhelm Mine, Custer Mining District, Custer County, South Dakota, USA
Data Identifiers
Mindat Occurrence Record ID:765824
Long-form Identifier:1:3:765824:2
GUID (UUID V4):0
Nearest other occurrences of Tourmaline
0.4km (0.3 miles) ⓘMilton Mine, Custer Mining District, Custer County, South Dakota, USA
0.9km (0.6 miles) ⓘSunset Lode Occurrence, Custer Mining District, Custer County, South Dakota, USA
1.1km (0.7 miles) ⓘSunrise Lode Occurrence, Custer Mining District, Custer County, South Dakota, USA
3.6km (2.2 miles) ⓘCrown Mine (McMackin Mine), Custer, Custer Mining District, Custer County, South Dakota, USA
3.6km (2.3 miles) ⓘHigh Climb Mine, Custer, Custer Mining District, Custer County, South Dakota, USA
3.8km (2.3 miles) ⓘSky Lode Occurrence, Unorganized mining district [1], Custer County, South Dakota, USA
4.0km (2.5 miles) ⓘPhelps Lode (Roosevelt Lode), Custer Mining District, Custer County, South Dakota, USA
4.6km (2.9 miles) ⓘLouise & Hunter Claim (Hunter and Louise Spodumene Dike), Oreville Mining District, Pennington County, South Dakota, USA
4.8km (3.0 miles) ⓘForty-Five Lode Occurrence, Custer Mining District, Custer County, South Dakota, USA
5.2km (3.2 miles) ⓘFriday Lode Occurrence, Custer Mining District, Custer County, South Dakota, USA
References
USGS Prof Paper 297F
 
and/or  
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