Vote for your favorite mineral in #MinCup26! - Hafnon vs. Putnisite
It's a pair of tiny minerals of unusual chemistry as orange Hafnon battles with purple Putnisite.
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Epidote from
Calaveras River Canyon, Valley Springs area, Calaveras County, California, USA


04048380017272734631450.jpg
Epidote

Calaveras River Canyon, Valley Springs area, Calaveras County, California, USA
03200250017272302639097.jpg
Epidote, etc.

Calaveras River Canyon, Valley Springs area, Calaveras County, California, USA
04048380017272734631450.jpg
Epidote

Calaveras River Canyon, Valley Springs area, Calaveras County, California, USA
03200250017272302639097.jpg
Epidote, etc.

Calaveras River Canyon, Valley Springs area, Calaveras County, California, USA
04048380017272734631450.jpg
Epidote

Calaveras River Canyon, Valley Springs area, Calaveras County, California, USA
03200250017272302639097.jpg
Epidote, etc.

Calaveras River Canyon, Valley Springs area, Calaveras County, California, USA
Locality type:Canyon
Classification
Species:Epidote
Formula:(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Comments:Single crystals are found loose in pocket clay and as inclusions within Quartz crystals. Epidote crystals from the Valley Springs area can be quite similar in habit to those from the New Melones Reservoir to the south. Less commonly found in pockets are unusual, dense clusters of unterminated crystals associated with Quartz. The terminations of these groups being found loose in the pocket clays.
Habit: Primatic crystals from 2mm to 15mm with vertical striations and typical wedge terminations. Crystals are a deep olive green to light green in color. Also massive and massive crystalline.
Colour:green
Quality for species:Good crystals or rich for species - important (!)
Abundance at site:Common
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Associated Minerals Based on Photo Data:
Quartz14
Chlorite Group9
Data
Mineral Data:Click here to view Epidote data
Locality Data:Click here to view Calaveras River Canyon, Valley Springs area, Calaveras County, California, USA
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:671138
Long-form Identifier:1:3:671138:2
GUID (UUID V4):0
References
Jake Harper: Field work, 1990 - 2110.
 
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