Meaning of MACQUARTITE in English

MACQUARTITE

General Information:

Chemical Formula:

Pb3Cu(CrO4)(SiO3)(OH)4·2(H2O)

Composition:

(Molecular Weight = 981.28 gm)

Chromium 5.30 % Cr

Copper 6.48 % Cu

Silicon 2.86 % Si

Hydrogen 0.82 % H

Lead 63.35 % Pb

Oxygen 21.20 % O

Empirical Formula:

Pb3Cu(CrO4)(SiO3)(OH)4·2(H2O)

Environment:

Encrusting dioptase.

IMA Status:

Approved IMA 1979

Locality:

Mammoth mine, Tiger, Pinal County, Arizona, USA.

Name Origin:

Named for Louis Charles Henri Macquart (1745-1803), French chemist who brought to France from Russia the samples of crocoite in which the element chromium was discovered.

Physical Properties:

Cleavage:

[100] Good

Color:

orange.

Density:

5.49

Habits:

Euhedral Crystals - Occurs as well-formed crystals showing good external form., ,

Hardness:

3.5 - Copper Penny

Luster:

Adamantine

Streak:

light orange

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .