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Armstrongite, Aegirine


Armstrongite : CaZr[Si6O15]·3H2O, Aegirine : NaFe3+[Si2O6]

Photo Copyright © Pavel M. Kartashov collection & photo  - This image is copyrighted. Unauthorized reproduction prohibited.
Locality: Dorozhnyi pegmatite, Khan Bogdo (Khan-Bogdinskii) massif, Gobi Desert, Mongolia
Prismatic crystals of free growth into cavity within massive armstrongite agregate from the type locality. Yellowish fibrous asbest-like armstrongite also present. Associating mineral is aegirine. FOV is ~12x10 mm. Collected by Arkadii Goreglyad in 1970. Pavel M. Kartashov collection and photo.


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