Vote for your favorite mineral in #MinCup26! - Pyromorphite vs. Graphite
Linked by archaic translations and mineralogical misunderstandings, the quarterfinals are ending in hexagons with vivid pyromorphite vs writeable graphite.
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Opal from
Sunset Crater (Sunset Peak), San Franciscan volcanic field (San Francisco Peaks; San Francisco Mts), Coconino County, Arizona, USA


Locality type:Crater
Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Sunset Crater (Sunset Peak), San Franciscan volcanic field (San Francisco Peaks; San Francisco Mts), Coconino County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:558656
Long-form Identifier:1:3:558656:1
GUID (UUID V4):0
Nearest other occurrences of Opal
60.9km (37.8 miles) ⓘPerrin Ranch, Williams, San Franciscan volcanic field (San Francisco Peaks; San Francisco Mts), Coconino County, Arizona, USA
62.5km (38.8 miles) ⓘMontezuma Nos. 7A-7B-7C, Montezuma group of claims, Cameron, Cameron Mining District, Coconino County, Arizona, USA
71.4km (44.4 miles) ⓘMontezuma No. 2, Montezuma group of claims, Cameron, Cameron Mining District, Coconino County, Arizona, USA
98.6km (61.3 miles) ⓘVerde River deposit, Camp Verde, Camp Verde Mining District, Yavapai County, Arizona, USA
References
Hanson, S. L., A. U. Fastner, W. B. Simmons (2008) Mineralogy of the Fumerole deposits at Sunset Crater Volcano National Monument, Northern Arizona. Rocks & Mnerals 83:6 pp 534-544.
 
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