| Locality type: | Area |
| Classification |
|---|
|
| Species: | 'Clinoptilolite Subgroup' (not an IMA approved species) |
| Formula: | M3-6(Si30Al6)O72 · 20H2O |
| Comments: | Authigenic. A common constituent of Miocene Brones Sandstone. An early alteration product of volcanic glass. |
| Confirmation |
|---|
|
| Validity: | Believed Valid |
| Data |
|---|
|
| Mineral Data: | Click here to view Clinoptilolite Subgroup data |
| Locality Data: | Click here to view Interstate highway 80 - highway 4 intersection area, Hercules, Contra Costa County, California, USA |
| Data Identifiers |
|---|
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| Mindat Occurrence Record ID: | 674662 |
| Long-form Identifier: | 1:3:674662:9 |
| GUID (UUID V4): | 6ca2b095-f950-4e9b-8ed1-3676901e6c32 |
| Nearest other occurrences of Clinoptilolite Subgroup |
|---|
|
|
| 34.6km (21.5 miles) | ⓘMount Diablo (Mt Diablo), Clayton, Contra Costa County, California, USA |
| 48.0km (29.8 miles) | ⓘUnnamed Zeolite occurrence [2], Alameda Creek, Union City, Alameda County, California, USA |
| 56.6km (35.2 miles) | ⓘMorrison Canyon, Fremont, Alameda County, California, USA |
| 66.9km (41.6 miles) | ⓘPatterson Pass, Livermore, Livermore Mining District (Tesla District), Alameda County, California, USA |
| References |
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