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Bright Gaspeite

The Mineral gaspeite

Gaspeite is a rare mineral, with a distinct yellowish-apple-green to bright green color. It has recently become popular among both mineral and gemstone collectors. Gaspeite specimens may be polished or sliced into slabs when sold on the market. It usually has brownish veins of rock running through the mineral, which are pronounced in cut or polished specimens.

Gaspeite belongs to the calcite group of minerals, a group of related carbonates that are isomorphous with one another. They are similar in many physical properties, and may partially or fully replace one another, forming a solid solution series. All members of the calcite group crystallize in the trigonal system, have perfect rhombohedral cleavage, and exhibit strong double refraction in transparent rhombohedrons.
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


Gaspeite is a minor gemstone and is cut into cabochons and beads for jewelry.

Gaspeite is a rare mineral with few notable occurrences. It is named after its original occurrence in the Gaspé Peninsula of Quebec, Canada, where it is found in the Gaspé mine, Murdochville. It is found in Australia in Kambalda and Widgiemooltha, Western Australia; in Lavrion, Greece; the San Benedetto Mine, Iglesias, Sardinia, Italy; and in the Pafuri nickel deposit, Limpopo Province, South Africa.

Magnesite, Dolomite, Annabergite, Serpentine, Annabergite, Millerite

Distinct color and mode of occurence in nickel deposits

gaspeite PHOTOS
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