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Artinite pit, Picacho Peak, New Idria District, Diablo Range, San Benito Co., California, USAi
Regional Level Types
Artinite pitPit
Picacho PeakPeak
New Idria DistrictMining District
Diablo RangeMountain Range
San Benito Co.County

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Location is approximate, estimate based on other nearby localities.
Latitude & Longitude (WGS84): 36° North , 120° West (est.)
Margin of Error:~26km
Locality type:Pit
Köppen climate type:Csb : Warm-summer Mediterranean climate

A serpentinite deposit with significant mineral specimen potential located in the Clear Creek area.

The locality consisted of an open cut in which serpentinized rocks were exposed. These rocks were often broken up, and the trick to collecting the artinite specimens was to dig them out to expose them and use a bar to pry them apart. Balls of white hemispheres of prismatic artinite crystals would grow on the altered surfaces of the spaces between these breccia blocks. Because the surfaces of these blocks were often somewhat altered, it was often possible to just break off the surface crust with the white Artinite balls still attached. The Artinite was frequently associated with tiny white balls of Hydromagnesite and occasional druses of orange Desautelsite. Upon long exposure, the Desautelsite became somewhat brown. The locality has produced some of the best specimens of artinite known. [Rock Currier 2010]

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

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

Mineral List

5 valid minerals.

Detailed Mineral List:

Formula: CaCO3
Reference: Si Frazier specimen
Formula: Mg2(CO3)(OH)2 · 3H2O
Reference: www.benitoitemine.com / Cisneros, S.L.; Witkowski, R.E. & Oswald, D.L. (1977): Artinite from San Benito County, California. Mineralogical Record 8, 457-460
Formula: Mg6Mn3+2(OH)16[CO3] · 4H2O
Reference: www.benitoitemine.com
Formula: Mg5(CO3)4(OH)2 · 5H2O
Reference: www.benitoitemine.com/ Cisneros, S.L.; Witkowski, R.E. & Oswald, D.L. (1977): Artinite from San Benito County, California. Mineralogical Record 8, 457-460
Formula: Mg5(CO3)4(OH)2 · 4H2O
Reference: Rolf Luetcke

List of minerals arranged by Strunz 10th Edition classification

Group 5 - Nitrates and Carbonates
Artinite5.DA.10Mg2(CO3)(OH)2 · 3H2O
Desautelsite5.DA.50Mg6Mn3+2(OH)16[CO3] · 4H2O
Dypingite5.DA.05Mg5(CO3)4(OH)2 · 5H2O
Hydromagnesite5.DA.05Mg5(CO3)4(OH)2 · 4H2O

List of minerals arranged by Dana 8th Edition classification

Artinite16b.3.1.1Mg2(CO3)(OH)2 · 3H2O
Desautelsite16b.6.2.4Mg6Mn3+2(OH)16[CO3] · 4H2O
Dypingite16b.7.2.1Mg5(CO3)4(OH)2 · 5H2O
Hydromagnesite16b.7.1.1Mg5(CO3)4(OH)2 · 4H2O
Unclassified Minerals, Mixtures, etc.

List of minerals for each chemical element

H DypingiteMg5(CO3)4(OH)2 · 5H2O
H DesautelsiteMg6Mn23+(OH)16[CO3] · 4H2O
H ArtiniteMg2(CO3)(OH)2 · 3H2O
H HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
C DypingiteMg5(CO3)4(OH)2 · 5H2O
C DesautelsiteMg6Mn23+(OH)16[CO3] · 4H2O
C ArtiniteMg2(CO3)(OH)2 · 3H2O
C AragoniteCaCO3
C HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
O DypingiteMg5(CO3)4(OH)2 · 5H2O
O DesautelsiteMg6Mn23+(OH)16[CO3] · 4H2O
O ArtiniteMg2(CO3)(OH)2 · 3H2O
O AragoniteCaCO3
O HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
Mg DypingiteMg5(CO3)4(OH)2 · 5H2O
Mg DesautelsiteMg6Mn23+(OH)16[CO3] · 4H2O
Mg ArtiniteMg2(CO3)(OH)2 · 3H2O
Mg HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
Ca AragoniteCaCO3
Mn DesautelsiteMg6Mn23+(OH)16[CO3] · 4H2O


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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Cisneros, S.L., Witkowski, R.E, and Oswald, D.L. (1977) Artinite from San Benito County, California. Mineralogical Record: 8: 457-460.

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