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1 item @ $25.00   30:00
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Armstrongite

#PD41566
SOLD
Armstrongite from Khan Bogdo Massif, Gobi Desert, Mongolia - PD41566
Armstrongite from Khan Bogdo Massif, Gobi Desert, Mongolia - PD41566

Armstrongite

#PD41566
Availability
Sold
Size
3 x 3 x 2 cm - Thumbnail 
Formula
CaZrSi6O15·2.5H2O (RRUFF)
Locality
Khan Bogdo Massif, Gobi Desert, Mongolia
Tagged
pegmatite mineral

Reddish brown fine grain crystalline areas with Aegerine or Arfvedsonite. Interesting summary on Mindat from Pavel Kartashov regarding this large alkaline massive, which is said to be the largest in the world. Pavel is spot on in his assessment of provenance. Armstrongite is named after Neil Armstrong, the first man on the moon. It was named on the 10th anniversery of the landing.

Type Locality

Armstrongite

Formula
CaZrSi6O15·2.5H2O 
Crystal System
Monoclinic 
Crystal Habit
Bladed, Spherical, Aggregates 
Cleavage
Perfect, Distinct, None 
Luster
Vitreous (Glassy) 
Color
light brown, reddish brown 
Streak
brownish white 
Class
Monoclinic - Sphenoidal 
Fracture
Brittle 
Hardness
4.5 

Data courtesy of Webmineral.

Collection
Phillips Collection
Special Info
Type Locality
Mineralpedia
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On Dakota Matrix
Previously Sold Armstrongite
On Dakota Matrix
Other Available Armstrongite
WebMineral
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Mindat
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