Vote for your favorite mineral in #MinCup26! - Hafnon vs. Putnisite
It's a pair of tiny minerals of unusual chemistry as orange Hafnon battles with purple Putnisite.
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Serpentine Subgroup from
Platner prospect, Red Mountain, Black Wonder Mining District, Stanislaus County, California, USA


Locality type:Prospect
Classification
Species:'Serpentine Subgroup' (not an IMA approved species)
Formula:D3[Si2O5](OH)4
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Hydromagnesite
Data
Mineral Data:Click here to view Serpentine Subgroup data
Locality Data:Click here to view Platner prospect, Red Mountain, Black Wonder Mining District, Stanislaus County, California, USA
Data Identifiers
Mindat Occurrence Record ID:683463
Long-form Identifier:1:3:683463:0
GUID (UUID V4):0
Nearest other occurrences of Serpentine Subgroup
0.4km (0.2 miles) ⓘNumber Five group (Number 5 group; No. 5 Mine; Mineral Products Company property), Copper Mountain, Black Wonder Mining District, Stanislaus County, California, USA
0.9km (0.6 miles) ⓘAdobe Canyon group deposits (McGuire et al. deposits; McGuire Holbrook and Springer Lea; Southeast; Mountain View Mine; Mountain View claim; Gray Fox claim), Copper Mountain, Black Wonder Mining District, Stanislaus County, California, USA
1.5km (0.9 miles) ⓘLucky Girl Mine (Stanislaus Mine), Black Mountain, Black Wonder Mining District, Stanislaus County, California, USA
2.6km (1.6 miles) ⓘBlack Bart Mine group, Red Mountain, Black Wonder Mining District, Stanislaus County, California, USA
3.9km (2.5 miles) ⓘRed Mountain Mine, Red Mountain, Black Wonder Mining District, Stanislaus County, California, USA
4.2km (2.6 miles) ⓘBlack Mike Mine (Black Point Mine; Black Rock Mine), Black Mountain, Black Wonder Mining District, Stanislaus County, California, USA
4.6km (2.9 miles) ⓘWestern Magnesite Company Mine, Red Mountain, Black Wonder Mining District, Santa Clara County, California, USA
5.8km (3.6 miles) ⓘWinship Mine, Red Mountain, Black Wonder Mining District, Santa Clara County, California, USA
5.8km (3.6 miles) ⓘAntonia claim, Black Mountain, Black Wonder Mining District, Santa Clara County, California, USA
22.9km (14.2 miles) ⓘSugarloaf Butte, Cedar Mountain Mining District, Alameda County, California, USA
References
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
 
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