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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Alforsite from
Esquire No. 7 claim, Big Creek, Big Creek-Rush Creek Mining District, Fresno County, California, USA


07653700017523765095517.jpg
Alforsite, etc.

Esquire No. 7 claim, Big Creek, Big Creek-Rush Creek Mining District, Fresno County, California, USA
07653700017523765095517.jpg
Alforsite, etc.

Esquire No. 7 claim, Big Creek, Big Creek-Rush Creek Mining District, Fresno County, California, USA
00243850017522613581800.jpg
Alforsite, etc.

Esquire No. 7 claim, Big Creek, Big Creek-Rush Creek Mining District, Fresno County, California, USA
Locality type:Claim
Classification
Species:Alforsite
Formula:Ba5(PO4)3Cl
Comments:Alforsite and fluorapatite are scattered within different fine-grained bands which contain a high proportion of quartz and alternate with bands bearing quartz in lesser amounts. Both bands contain abundant celsian, witherite, sanbornite with accessory, disseminated fresnoite, walstromite, tourmaline and pyrite. Nearly pure fluorapatite is also common in these samples.
Confirmation
Validity:Valid - Type Locality
Associated Minerals Based on Photo Data:
Sanbornite1
Anandite1
Data
Mineral Data:Click here to view Alforsite data
Locality Data:Click here to view Esquire No. 7 claim, Big Creek, Big Creek-Rush Creek Mining District, Fresno County, California, USA
Data Identifiers
Mindat Occurrence Record ID:47483
Long-form Identifier:1:3:47483:4
GUID (UUID V4):0
Nearest other occurrences of Alforsite
0.2km (0.1 miles) ⓘBig Creek, Big Creek-Rush Creek Mining District, Fresno County, California, USA
72.4km (45.0 miles) ⓘBaumann prospect (Bauman Ranch), Dumtah, Tulare County, California, USA
References
Newberry, Nancy G., Essene, Eric J., Peacor, and Donald R. (1981) Alforsite, a new member of the apatite group: the barium analogue of chlorapatite. American Mineralogist, 66 (9-10) 1050-1053
Mandarino, Joseph A. (2002) Abstracts of New Mineral Descriptions. The Mineralogical Record, 33 (2) 161-172
 
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