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Armstrongite
Type Locality
Dorozhnyi pegmatite, Khan Bogdo Massif (Khan-Bogdinskii), Gobi Desert, Mongolia
Mineral Data
CaZr[Si
6
O
15
]·3H
2
O
Strunz:
9.EA.35
Physical Properties
Crystal System:
Monoclinic
Hardness:
4.5
Tenacity:
very brittle
