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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Gonnardite from
Sar-e-Sang River, Sar-e-Sang, Kuran wa Munjan District, Badakhshan, Afghanistan


08395260017362458058631.jpg
Gonnardite, etc.

Sar-e-Sang River, Sar-e-Sang, Kuran wa Munjan District, Badakhshan, Afghanistan
02444750017272021731834.jpg
Gonnardite, etc.

Sar-e-Sang River, Sar-e-Sang, Kuran wa Munjan District, Badakhshan, Afghanistan
04554540017364009019968.jpg
Gonnardite, etc.

Sar-e-Sang River, Sar-e-Sang, Kuran wa Munjan District, Badakhshan, Afghanistan
05934720017272021743718.jpg
Gonnardite, etc.

Sar-e-Sang River, Sar-e-Sang, Kuran wa Munjan District, Badakhshan, Afghanistan
03079230017364009028890.jpg
Gonnardite, etc.

Sar-e-Sang River, Sar-e-Sang, Kuran wa Munjan District, Badakhshan, Afghanistan
02444750017272021731834.jpg
Gonnardite, etc.

Sar-e-Sang River, Sar-e-Sang, Kuran wa Munjan District, Badakhshan, Afghanistan
04554540017364009019968.jpg
Gonnardite, etc.

Sar-e-Sang River, Sar-e-Sang, Kuran wa Munjan District, Badakhshan, Afghanistan
05934720017272021743718.jpg
Gonnardite, etc.

Sar-e-Sang River, Sar-e-Sang, Kuran wa Munjan District, Badakhshan, Afghanistan
03457150017364009039308.jpg
Gonnardite, etc.

Sar-e-Sang River, Sar-e-Sang, Kuran wa Munjan District, Badakhshan, Afghanistan
02444750017272021731834.jpg
Gonnardite, etc.

Sar-e-Sang River, Sar-e-Sang, Kuran wa Munjan District, Badakhshan, Afghanistan
03934170017364009041986.jpg
Gonnardite, etc.

Sar-e-Sang River, Sar-e-Sang, Kuran wa Munjan District, Badakhshan, Afghanistan
05934720017272021743718.jpg
Gonnardite, etc.

Sar-e-Sang River, Sar-e-Sang, Kuran wa Munjan District, Badakhshan, Afghanistan
Locality type:River
Classification
Species:Gonnardite
Formula:(Na,Ca)2(Si,Al)5O10 · 3H2O
Comments:This was initially called plagioclase, confirmed by EDS. The EDS pattern has the same 1:1 ratio of Al: Si as plagioclase and sodalite group minerals. Gonnardite can have this same EDS. The PXRD of Gonnardite is attached to the Marialite specimen it came from.
Habit:Pseudomorphing Hauyne dodecs
Colour:white
Luminescent properties:White in LW, MW & SW UV
Confirmation
Validity:Confirmed
Confirmation Methods:XRD
Associated Minerals Based on Photo Data:
Haüyne44
Calcite33
Phlogopite19
Pyrite18
Pargasite6
Albite6
- var Low Albite2
Thomsonite-Ca5
Lazurite4
Marialite2
Zeolite Group1
Titanite1
Data
Mineral Data:Click here to view Gonnardite data
Locality Data:Click here to view Sar-e-Sang River, Sar-e-Sang, Kuran wa Munjan District, Badakhshan, Afghanistan
Photo GalleryView Gallery (4 photos)
Data Identifiers
Mindat Occurrence Record ID:879700
Long-form Identifier:1:3:879700:1
GUID (UUID V4):0
References
RWMW Collection
 
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