| Locality type: | Mine |
| 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 Robertson Clay Mine, Apple Valley, San Bernardino County, California, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 1036752 |
| Long-form Identifier: | 1:3:1036752:4 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Montmorillonite |
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| 51.4km (31.9 miles) | ⓘUnnamed Clay occurrence [20], Daggett, Calico District (Daggett District; Calico-Daggett area), Calico Mts (Calico Hills), San Bernardino County, California, USA |
| 55.8km (34.6 miles) | ⓘCommercial Quarry, Sky Blue Hill, Crestmore quarries, Crestmore, Jurupa Valley, Riverside County, California, USA |
| 66.3km (41.2 miles) | ⓘHenz Bentonite prospect, Hector, San Bernardino County, California, USA |
| 67.9km (42.2 miles) | ⓘUnnamed abandoned quarry (Unnamed small gravel quarry), Claremont, Los Angeles County, California, USA |
| 68.8km (42.7 miles) | ⓘNorth group of claims, Hector, San Bernardino County, California, USA |
| 80.8km (50.2 miles) | ⓘSaddleback Mountain, East Kramer Borate area (East Kramer Colemanite area), East Kramer Mining District, San Bernardino County, California, USA |
| 81.5km (50.6 miles) | ⓘMudd Mine, West Baker, Kramer Borate deposit, Boron, Kern County, California, USA |
| 82.7km (51.4 miles) | ⓘKramer Borate deposit, Boron, Kern County, California, USA |
| 92.2km (57.3 miles) | ⓘMojave River Road, Afton Canyon, Afton, San Bernardino County, California, USA |
| 95.1km (59.1 miles) | ⓘAnita Mine (Magee Mine; Magee & Dougherty Mine; Sage Mine), Red Mountain, Cahuilla Mining District, Riverside County, California, USA |
| References |
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