Mineral - Belloite
Belloite
Chemical Properties
Mineral Class
Halides
Toxicity
none
Formula
Cu(OH)Cl
Unit Cell
a=5.55 b=6.67 c=6.12 β=115° Z=4
Physical Properties
Hardness
1 - 2
Streak
green yellow
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
yellowgreen
Birefringence
Luster
Vitreous
Transparency
translucent,
transparent
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
monoclinic-prismatic - 2/m
Space Group
P2 1 /c (14)
Habit
crusty
Formation
Volcanic in fumaroles, secondary in the oxidation zone of copper deposits
Paragenesis
Twinning
Rarity
Very rare
Synonyms
Belloite
Composition
Elements
Mass
CuO
68.84
Cl
32.31
H₂O
7.47
Chile (Schlüter et al. 2000)
Name and first discovery: Named after the founder of the Universidad de Chile, Andrés de Jesús María y José Bello López (1781-1865). First described in 2000.
Chemism:
Synonyms:
Varieties:
Abbreviation: Bll
Literature
Schluter, J., Klaska, K. H., & Gebhard, G. (2000). Belloite, Cu (OH) Cl, a new mineral from Sierra Gorda, Antofagasta, Chile. NeuesJahrbuch fur Mineralogie-Monatshefte, (2), 67-73.