Margarite
History
Activities related to discovery and approval of the group members
Structural context
Margarite
Crystal System monoclinicCrystal Class prismaticSpace Group C2/c
a5.1038—5.114 (5.1075)
b8.8287—8.872 (8.8434)
c19.148—19.164 (19.154)
alpha90
beta95.46—95.51 (95.4875)
gamma90
volume858.893—865.48 (861.1728)
Based on 4 measurements
Chemical context
Stoichiometric formulas
Margarite
mindat.org
- March 13, 2023CaAl2(Al2Si2O10)(OH)2
IMA
- March 13, 2023CaAl2Si2Al2O10(OH)2
mineralogy.rocks
- Aug. 30, 2022CaAl2(Si2Al2)O10(OH)2
Elements recorded on EPMA
4
Al
4
Ca
4
H
4
O
4
Si
2
Mg
2
Na
1
Fe
1
Li
Physical properties
ColorColor entities, recognized using a custom trained NER model
- grayish
- pale pink
- colorless
Color noteOriginal color note from the source
Grayish, pale pink, yellow, green. colorless in thin section.
StreakStreak entities, recognized using a custom trained NER model
Streak noteOriginal streak note from the source
White
Lustre
Vitreous
Pearly
Transparency
Translucent
Tenacity
brittle
Hardness
3.5—4.5
Measured density
2.99—3.08
Calculated density
3.077