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Opal-AN from
Petrick pegmatite, Kingsland Granite Company Quarry (Petrick Quarry), Llano County, Texas, USA


Locality type:Pegmatite
Classification
Species:Opal var: Opal-AN
Formula:SiO2 · nH2O
Comments:Dazzling green fluorescence (SW) especially beautiful when coating microcline with its vermillion red fluorescence.
Habit:Thin coatings on quartz and microcline, glassy blebs in vugs amorphous)
Colour:transparent very pale green
Luminescent properties:Strikingly brilliant green, even visible in overcast daylight.
Abundance at site:Very common
Confirmation
Validity:Confirmed
Confirmation Methods:Visual (Fluorescence)
Associated Minerals:
Associates:Fluorite
Microcline
Microcline
Milky Quartz
Smoky Quartz
Smoky Quartz
Data
Mineral Data:Click here to view Opal-AN data
Locality Data:Click here to view Petrick pegmatite, Kingsland Granite Company Quarry (Petrick Quarry), Llano County, Texas, USA
Data Identifiers
Mindat Occurrence Record ID:400389
Long-form Identifier:1:3:400389:2
GUID (UUID V4):0
References
Self-collected by Franklin Roberts.
 
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