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Gyrolite from
Fort Point, San Francisco, San Francisco County, California, USA


Locality type:Point
Classification
Species:Gyrolite
Formula:NaCa16Si23AlO60(OH)8 · 14H2O
Comments:Occurs as spherical or massive with apophyllite; platy or plumose aggregates replacing wall rock in fissures of basalt.
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Apophyllite Group
Data
Mineral Data:Click here to view Gyrolite data
Locality Data:Click here to view Fort Point, San Francisco, San Francisco County, California, USA
Data Identifiers
Mindat Occurrence Record ID:423414
Long-form Identifier:1:3:423414:2
GUID (UUID V4):0
Nearest other occurrences of Gyrolite
90.1km (56.0 miles) ⓘNew Almaden Mine (New Almaden Mines), New Almaden, New Almaden Mining District, Santa Clara County, California, USA
References
www.missourigeologists.org/Min-Loc1-2005.pdf.
Schaller, Waldemar Theodore (1905b), Mineralogical notes: USGS Bulletin 262: 121-144.pp. 124, 126
Schaller, W. T. (1911) Mineralogical notes, series 1. Bulletin 490. US Geological Survey 109 pp. doi:10.3133/b490
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
 
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