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Arfvedsonite from
Pseudomorphosed pegmatite, Mount Ulyn Khuren, Khaldzan Buragtag massif, Myangad District, Khovd Province, Mongolia


07375900017465095534039.jpg
Arfvedsonite

Pseudomorphosed pegmatite, Mount Ulyn Khuren, Khaldzan Buragtag massif, Myangad District, Khovd Province, Mongolia
05199720017470609567954.jpg
Arfvedsonite

Pseudomorphosed pegmatite, Mount Ulyn Khuren, Khaldzan Buragtag massif, Myangad District, Khovd Province, Mongolia
04650130017365141566287.jpg
Arfvedsonite

Pseudomorphosed pegmatite, Mount Ulyn Khuren, Khaldzan Buragtag massif, Myangad District, Khovd Province, Mongolia
06179880017461177349895.jpg
Arfvedsonite

Pseudomorphosed pegmatite, Mount Ulyn Khuren, Khaldzan Buragtag massif, Myangad District, Khovd Province, Mongolia
09612190017461238483146.jpg
Arfvedsonite

Pseudomorphosed pegmatite, Mount Ulyn Khuren, Khaldzan Buragtag massif, Myangad District, Khovd Province, Mongolia
04650130017365141566287.jpg
Arfvedsonite

Pseudomorphosed pegmatite, Mount Ulyn Khuren, Khaldzan Buragtag massif, Myangad District, Khovd Province, Mongolia
07375900017465095534039.jpg
Arfvedsonite

Pseudomorphosed pegmatite, Mount Ulyn Khuren, Khaldzan Buragtag massif, Myangad District, Khovd Province, Mongolia
05199720017470609567954.jpg
Arfvedsonite

Pseudomorphosed pegmatite, Mount Ulyn Khuren, Khaldzan Buragtag massif, Myangad District, Khovd Province, Mongolia
04650130017365141566287.jpg
Arfvedsonite

Pseudomorphosed pegmatite, Mount Ulyn Khuren, Khaldzan Buragtag massif, Myangad District, Khovd Province, Mongolia
Locality type:Pegmatite
Classification
Species:Arfvedsonite
Formula:NaNa2(Fe42+Fe3+)Si8O22(OH)2
Comments:Large (up to 18x8x3.5 cm) arfvedsonite crystals have been found in the quartz core of alkali granite pegmatites on the Northern slope of Mount Ulyn Khuren. The crystals are often twinned. The arfvedsonite is K-rich and has a very low Mg content.
Quality for species:Good crystals or rich for species - important (!)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Arfvedsonite data
Locality Data:Click here to view Pseudomorphosed pegmatite, Mount Ulyn Khuren, Khaldzan Buragtag massif, Myangad District, Khovd Province, Mongolia
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:301661
Long-form Identifier:1:3:301661:9
GUID (UUID V4):0
References
Pavel M. Kartashov (n.d.) analytical data.
 
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