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Alum Rock, Black Wonder Mining District, Santa Clara County, California, USAi
Regional Level Types
Alum Rock- not defined -
Black Wonder Mining DistrictMining District
Santa Clara CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
37° 21' 57'' North , 121° 49' 37'' West
Latitude & Longitude (decimal):
37.36611,-121.82722
GeoHash:
G#: 9q9kef217
GRN:
N25W70
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Alum Rock15,536 (2018)0.0km
East Foothills8,269 (2011)1.9km
San Jose1,026,908 (2017)6.7km
Communications Hill11,267 (2019)8.9km
Seven Trees1,788 (2018)9.0km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Santa Clara Valley Gem & Mineral SocietySan Jose, California7km
Peninsula Gem & Geology Society, Inc.Los Altos, California25km
Livermore Valley LithophilesLivermore, California35km
Sequoia Gem and Mineral SocietyRedwood City, California38km
Mineral & Gem Society of Castro ValleyHayward, California40km
Mindat Locality ID:
217937
Long-form identifier:
mindat:1:2:217937:0
GUID (UUID V4):
0


A populated place (town) located E of San Jose and Interstate highway 680, at the western margin of the Diablo Range.

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Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

1 valid mineral.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
ⓘLawsonite9.BE.05CaAl2(Si2O7)(OH)2 · H2O

List of minerals for each chemical element

HHydrogen
Hⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O
OOxygen
Oⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O
AlAluminium
Alⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O
SiSilicon
Siⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O
CaCalcium
Caⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O

Localities in this Region

USA

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.
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