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Montgomeryite from
Wharf Mine, Bald Mountain Mining District (Portland Mining District), Lawrence Co., South Dakota, USA

Locality type:Mine
Formula:Ca4MgAl4(PO4)6(OH)4 · 12H2O
Validity:Believed Valid
References:Loomis, T. (2011), "News from the Black Hills, South Dakota", Mineral News, in press
Mineral Data:Click here to view Montgomeryite data
Locality Data:Click here to view Wharf Mine, Bald Mountain Mining District (Portland Mining District), Lawrence Co., South Dakota, USA
Nearest other occurrences of Montgomeryite
61.9km (38.4 miles) Etta Mine, Keystone, Keystone Mining District, Pennington Co., South Dakota, USA
71.6km (44.5 miles) Tip Top Mine (Tip Top pegmatite), Fourmile, Custer Mining District, Custer Co., South Dakota, USA
79.6km (49.5 miles) White Elephant Mine, Cicero Peak, Pringle, Custer Mining District, Custer Co., South Dakota, USA
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