Mineral Factbook

Zaratite

Ni3(CO3)(OH)4·4H2OIMA symbol: Zarquestionable

Zaratite is a carbonate or nitrate mineral with the formula Ni3(CO3)(OH)4·4H2O, crystallizing in the cubic system. It has a Mohs hardness of 3-3.25, typically green in color, with a vitreous luster, a specific gravity of 2.57-2.69. Its streak is green.

Photos

Zaratite specimen photo
Darla Sondrol · CC0 · Commons
Zaratite specimen photo
Darla Sondrol · CC0 · Commons
Zaratite specimen photo
Dave Dyet http://www.shutterstone.com http://www.dyet.com · Public domain · Commons
Zaratite specimen photo
Robert M. Lavinsky · CC BY-SA 3.0 · Commons

Physical properties

Hardness (Mohs)
3-3.25single sourceDana, System of Mineralogy, 6th ed. (1892)
Specific gravity
2.57-2.69 g/cm3single sourceDana, System of Mineralogy, 6th ed. (1892)
Color
greensingle sourceDana, System of Mineralogy, 6th ed. (1892)
Streak
greenDana, System of Mineralogy, 6th ed. (1892)
Luster
vitreoussingle sourceDana, System of Mineralogy, 6th ed. (1892)

Chemistry (calculated)

Molecular weight376.18 g/molcalculated from the IMA formula
Composition (wt%)Ni 46.81%, C 3.19%, O 46.78%, H 3.22%

Classification

Nickel-Strunz (10th)5.DA.15Wikidata (CC0)
Nickel-Strunz (9th)5.DA.70Wikidata (CC0)
Dana (8th)16b.4.1.1Wikidata (CC0)