Chemical Formula
(Ni,Mg,Fe)CO3
Composition
Carbonate of nickel, magnesium and iron
Color
Pale green, apple-green, yellowish-green, bright green
Streak
Yellow-green
Hardness
4.5 - 5
Crystal System
Hexagonal
Crystal Forms and Aggregates
Rhombohedrons, as well as compact groups of scalenohedrons occur, although rarely. Mostly occurs as crusts, botryoidal, and as ball shaped aggregates.
Transparency
Transparent to translucent
Specific Gravity
3.7
Luster
Vitreous to dull
Cleavage
1,3 - rhombohedral
Fracture
Uneven
Tenacity
Brittle
Complex Tests
Effervesces in hydrochloric acid
In Group
Carbonates; Calcite Group
Striking Features
Distinct color and mode of occurrence in nickel deposits
Environment
In the oxidation zone of nickel deposits.
Rock Type
Metamorphic
Popularity (1-4)
2
Prevalence (1-3)
3
Demand (1-3)
1
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