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Tourmaline from
Norwich Mine (Plutus; Norwich-Plutus), Butte, Butte Mining District (Summit Valley Mining District), Silver Bow Co., Montana, USA

Locality type:Mine
Classification
Species:'Tourmaline' (not an IMA approved species)
Formula:A(D3)G6(Si6O18)(BO3)3X3Z
Confirmation
Validity:Believed Valid
References
References:U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Data
Mineral Data:Click here to view Tourmaline data
Locality Data:Click here to view Norwich Mine (Plutus; Norwich-Plutus), Butte, Butte Mining District (Summit Valley Mining District), Silver Bow Co., Montana, USA
Nearest other occurrences of Tourmaline
23.2km (14.4 miles) Toll Mountain Occurrence, Little Pipestone Mining District, Jefferson Co., Montana, USA
24.1km (15.0 miles) Pohndorf Mine (Pondorff Mine), Toll Mountain, Boulder Batholith, Jefferson Co., Montana, USA
33.0km (20.5 miles) Alport Mine (All Port Mine), Cataract Mining District (Comet Mining District; Basin Mining District), Jefferson Co., Montana, USA
41.2km (25.6 miles) PC Mine (P.C. Crystal Mine; Penn placer), Cataract Mining District (Comet Mining District; Basin Mining District), Jefferson Co., Montana, USA
45.2km (28.1 miles) Morning Mine (Midnight Mine), Cataract Mining District (Comet Mining District; Basin Mining District), Jefferson Co., Montana, USA
45.6km (28.3 miles) Hawkeye Mine, Cataract Mining District (Comet Mining District; Basin Mining District), Jefferson Co., Montana, USA
45.8km (28.5 miles) Eva May Mine (Eva May Tailings), Cataract Mining District (Comet Mining District; Basin Mining District), Jefferson Co., Montana, USA
47.1km (29.3 miles) Solar Mine (Solar and Pearl; Solar Pearl), Cataract Mining District (Comet Mining District; Basin Mining District), Jefferson Co., Montana, USA
47.6km (29.6 miles) Butte and Philadelphia Prospect (Lady Leith-Cady Leith Mines; Katie Leith), Cataract Mining District (Comet Mining District; Basin Mining District), Jefferson Co., Montana, USA
48.0km (29.8 miles) Fool Hen Property, Calvert Hill Mining District, Beaverhead Co., Montana, USA
 
Mineral and/or Locality  
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