Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Pumpellyite Subgroup from
Ward Creek [2], Cazadero, Coast Range, Sonoma County, California, USA


07543490017372041702118.jpg
Pumpellyite Subgroup, etc.

Ward Creek [2], Cazadero, Coast Range, Sonoma County, California, USA
07543490017372041702118.jpg
Pumpellyite Subgroup, etc.

Ward Creek [2], Cazadero, Coast Range, Sonoma County, California, USA
07921100017372041713133.jpg
Pumpellyite Subgroup, etc.

Ward Creek [2], Cazadero, Coast Range, Sonoma County, California, USA
Locality type:Creek
Classification
Species:'Pumpellyite Subgroup' (not an IMA approved species)
Formula:Ca2XAl2[Si2O6(OH)][SiO4](OH)2A
Comments:Constitutes 12% of metabasalt.
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Glaucophane1
Garnet Group1
Data
Mineral Data:Click here to view Pumpellyite Subgroup data
Locality Data:Click here to view Ward Creek [2], Cazadero, Coast Range, Sonoma County, California, USA
Data Identifiers
Mindat Occurrence Record ID:684690
Long-form Identifier:1:3:684690:9
GUID (UUID V4):0
Nearest other occurrences of Pumpellyite Subgroup
18.5km (11.5 miles) ⓘCamp Meeker, Coast Range, Sonoma County, California, USA
39.0km (24.2 miles) ⓘRosenhahnite occurrence, Russian River, Cloverdale area, Mendocino County, California, USA
59.7km (37.1 miles) ⓘBlack Mountain Quarry, Black Mountain, Marin County, California, USA
70.6km (43.8 miles) ⓘUnnamed Pumpellyite occurrence [1], Novato, Marin County, California, USA
82.5km (51.3 miles) ⓘCapell Creek, Lake Berryessa area, Napa County, California, USA
88.9km (55.2 miles) ⓘReed Station, Tiburon Peninsula, Marin County, California, USA
94.7km (58.9 miles) ⓘWaldo Grade area, Marin County, California, USA
References
COLEMAN, R. G., LEE, D. E. (1963) Glaucophane-bearing Metamorphic Rock Types of the Cazadero Area, California. Journal of Petrology, 4 (2) 260-301 doi:10.1093/petrology/4.2.260p.290
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
Shibakusa, H., Maekawa, H. (1997) Lawsonite-bearing eclogitic metabasites in the Cazadero area, northern California. Mineralogy and Petrology, 61 (1) 163-180 doi:10.1007/bf01172482
 
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