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Unnamed Zeolite occurrence [1], Briones Hills, Contra Costa County, California, USAi
Regional Level Types
Unnamed Zeolite occurrence [1]Occurrence
Briones HillsGroup of Hills
Contra Costa CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
37° North , 122° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~1km
GRN:
N26W69
Type:
Occurrence
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Mindat Locality ID:
212137
Long-form identifier:
mindat:1:2:212137:9
GUID (UUID V4):
0


A zeolite occurrence located E of Oakland (Alameda County) in the Briones Hills.

Mineralization is hosted in the Miocene Briones Sandstone.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


Detailed Mineral List:

ⓘ 'Clinoptilolite Subgroup'
Formula: (Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O
Description: Occurs as authogenic constituent of Miocene Briones Sandstone. An early alteration product of volcanic glass.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Unclassified
ⓘ'Clinoptilolite Subgroup'-(Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O

List of minerals for each chemical element

HHydrogen
Hⓘ Clinoptilolite Subgroup(Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O
OOxygen
Oⓘ Clinoptilolite Subgroup(Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O
NaSodium
Naⓘ Clinoptilolite Subgroup(Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O
AlAluminium
Alⓘ Clinoptilolite Subgroup(Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O
SiSilicon
Siⓘ Clinoptilolite Subgroup(Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O
KPotassium
Kⓘ Clinoptilolite Subgroup(Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O
CaCalcium
Caⓘ Clinoptilolite Subgroup(Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Murata, K.J. and Whiteley, K.R. (1973) Zeolites in the Miocene Briones sandstone and related formations of the central Coast Ranges, California. USGS Journal Res.: 1: 256-257
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
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