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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Melanite from
California State Gem Mine, Santa Rita Peak, San Benito County, California, USA


03311870017272011237822.jpg
Melanite

California State Gem Mine, Santa Rita Peak, San Benito County, California, USA
06164410017361018832849.jpg
Melanite

California State Gem Mine, Santa Rita Peak, San Benito County, California, USA
03311870017272011237822.jpg
Melanite

California State Gem Mine, Santa Rita Peak, San Benito County, California, USA
06164410017361018832849.jpg
Melanite

California State Gem Mine, Santa Rita Peak, San Benito County, California, USA
03311870017272011237822.jpg
Melanite

California State Gem Mine, Santa Rita Peak, San Benito County, California, USA
06164410017361018832849.jpg
Melanite

California State Gem Mine, Santa Rita Peak, San Benito County, California, USA
Locality type:Mine
Classification
Species:Andradite var: Melanite
Formula:Ca3Fe23+(SiO4)3
Chemical Analyses:
Oxide wt%:
12
SiO236.60 %34.00 %
CaO31.30 %32.00 %
Fe2O329.10 %21.50 %
TiO22.50 %9.70 %
Al2O30.00 %0.00 %
Total:99.50 %97.20 %
Empirical formulas:
1Ca2.81Fe3+1.83Ti0.16Si3.06O12
2Ca2.91Fe3+1.38Ti0.62Si2.89O12
Sample references:
1rim
P., G. Manning; D., C. Harris (1970) Optical-absorption and electron-microprobe studies of some high-Ti andradites. The Canadian Mineralogist, 10 (2). p.260-271.
2core
P., G. Manning; D., C. Harris (1970) Optical-absorption and electron-microprobe studies of some high-Ti andradites. The Canadian Mineralogist, 10 (2). p.260-271.
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Perovskite7
Data
Mineral Data:Click here to view Melanite data
Locality Data:Click here to view California State Gem Mine, Santa Rita Peak, San Benito County, California, USA
Photo GalleryView Gallery (7 photos)
Data Identifiers
Mindat Occurrence Record ID:213281
Long-form Identifier:1:3:213281:5
GUID (UUID V4):0
Nearest other occurrences of Melanite
0.6km (0.4 miles) ⓘChlorite Schist Knob occurrence, Santa Rita Peak, San Benito County, California, USA
1.2km (0.8 miles) ⓘSanta Rita Peak, San Benito County, California, USA
1.7km (1.1 miles) ⓘBlack Diamond One claim, Santa Rita Peak, San Benito County, California, USA
3.0km (1.8 miles) ⓘPerovskite Peak (Perovskite Hill; Perovskite Knob; Chlorite Knob; Schist Knob), San Benito Peak (San Benito Mountain), San Benito County, California, USA
7.1km (4.4 miles) ⓘJunnila Mine (Junnila claim), Santa Rita Peak, San Benito County, California, USA
References
Am Min 51:381-387
 
and/or  
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