| Locality type: | Prospect |
| Classification |
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| Species: | Montmorillonite |
| Formula: | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Montmorillonite data |
| Locality Data: | Click here to view Boeing Prospect (Flynn Fluorite & Gold; Flynn Property), Greenhorn Mining District (Austin Mining District), Lewis and Clark County, Montana, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 1747047 |
| Long-form Identifier: | 1:3:1747047:4 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Montmorillonite |
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| 3.1km (1.9 miles) | ⓘShale Deposit, Blossburg, Blossburg Area, Powell County, Montana, USA |
| 3.1km (1.9 miles) | ⓘClaystone Deposit, Blossburg, Blossburg Area, Powell County, Montana, USA |
| 33.8km (21.0 miles) | ⓘMontana Tunnels Mine (Part of Corbin Copper Claims), Colorado Mining District (Prickly Pear Mining District; Corbin Mining District), Jefferson County, Montana, USA |
| 38.0km (23.6 miles) | ⓘClay Deposit, Garrison, Garrison Area, Powell County, Montana, USA |
| 41.3km (25.6 miles) | ⓘClay Deposit (3), Garrison, Garrison Area, Powell County, Montana, USA |
| 42.4km (26.3 miles) | ⓘMcDonald Meadows Occurrence, Seven-Up Pete Mining District, Lewis and Clark County, Montana, USA |
| 53.3km (33.1 miles) | ⓘClay Deposit Near Haskell, Pioneer Mining District (Gold Creek Mining District), Powell County, Montana, USA |
| 57.5km (35.7 miles) | ⓘUnnamed Clay deposit [2], Drummond, Granite County, Montana, USA |
| 70.5km (43.8 miles) | ⓘUnnamed Clay deposit [4], Bradman, Granite County, Montana, USA |
| 71.8km (44.6 miles) | ⓘBerkeley Pit, Butte Mining District (Summit Valley Mining District), Silver Bow County, Montana, USA |
| References |
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