| Locality type: | Point |
| Classification |
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| Species: | Quartz |
| Formula: | SiO2 |
| Comments: | Occurs as pseudomorphs after apophyllite. |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals: |
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| Associates: | Datolite
Pectolite
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| Data |
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| Mineral Data: | Click here to view Quartz data |
| Locality Data: | Click here to view Fort Point, San Francisco, San Francisco County, California, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 686097 |
| Long-form Identifier: | 1:3:686097:4 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Quartz |
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| 5.8km (3.6 miles) | ⓘRodeo Beach, Marin County, California, USA |
| 6.8km (4.2 miles) | ⓘUnited States Mint site, Duboce Street near Market Street, San Francisco, San Francisco County, California, USA |
| 12.5km (7.8 miles) | ⓘBlack Mountain Mine (Black Mtn.), San Bruno Mountain State and County Park, Daly City, San Mateo County, California, USA |
| 15.9km (9.9 miles) | ⓘEast Peak, Mount Tamalpais, Marin County, California, USA |
| 16.9km (10.5 miles) | ⓘFerroaxinite occurrence, Stinson Beach, Marin County, California, USA |
| 17.5km (10.9 miles) | ⓘSouth San Francisco Land & Improvement Company Mine, South San Francisco, San Mateo County, California, USA |
| 20.6km (12.8 miles) | ⓘSpruce Street Thunder Egg locality, Berkeley, Alameda County, California, USA |
| 21.4km (13.3 miles) | ⓘBolinas, Marin County, California, USA |
| 22.6km (14.1 miles) | ⓘAgate Beach, Bolinas, Marin County, California, USA |
| 23.6km (14.7 miles) | ⓘUnnamed gemstone occurrence [1], Berkeley, Alameda County, California, USA |
| References |
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