Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Chalcedony from
Opal Mountains Agate Field prospect (Black Mountain; Black Mtn), Opal Mountain, San Bernardino County, California, USA


Locality type:Prospect
Classification
Species:Quartz var: Chalcedony
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcedony data
Locality Data:Click here to view Opal Mountains Agate Field prospect (Black Mountain; Black Mtn), Opal Mountain, San Bernardino County, California, USA
Data Identifiers
Mindat Occurrence Record ID:146237
Long-form Identifier:1:3:146237:1
GUID (UUID V4):0
Nearest other occurrences of Chalcedony
19.9km (12.4 miles) ⓘMud Hills (Strontium Hills), Barstow Mining District, San Bernardino County, California, USA
21.3km (13.3 miles) ⓘPedry Mine (San Antonio Mine; Pedry deposit; Golden Witch Mine; Golden Witch deposit), Mount General (Mt General), Hinkley, Barstow Mining District, San Bernardino County, California, USA
21.8km (13.5 miles) ⓘChalcedony Pseudomorphs occurrence, Mud Hills (Strontium Hills), Barstow Mining District, San Bernardino County, California, USA
26.2km (16.3 miles) ⓘUnnamed Hg occurrence [3], Eagle Crags, San Bernardino County, California, USA
30.6km (19.0 miles) ⓘUnnamed Agate-Quartz occurrence [1], Eagle Crags, San Bernardino County, California, USA
31.5km (19.6 miles) ⓘBarium Queen Mine, Mitchel Range, Barstow Mining District, San Bernardino County, California, USA
34.1km (21.2 miles) ⓘUnnamed Agate-Quartz occurrence [2], Robbers Mountain, San Bernardino County, California, USA
36.2km (22.5 miles) ⓘCalico District (Daggett District; Calico-Daggett area), Calico Mts (Calico Hills), San Bernardino County, California, USA
45.0km (27.9 miles) ⓘMyrick Spring occurrence, Myrick Spring, Granite Mts [3], San Bernardino County, California, USA
52.7km (32.7 miles) ⓘAlvord Mine, Alvord Peak, Alvord District, Alvord Mountain, San Bernardino County, California, USA
References
 
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