ERNSTITE


Meaning of ERNSTITE in English

General Information:

Chemical Formula:

(Mn++1-xFe+++x)Al(PO4)(OH)2-xOx

Composition:

(Molecular Weight = 210.86 gm)

Manganese 13.03 % Mn

Aluminum 12.80 % Al

Iron 13.24 % Fe

Phosphorus 14.69 % P

Hydrogen 0.72 % H

Oxygen 45.53 % O

Empirical Formula:

Mn2+0.5Fe3+0.5Al(PO4)(OH)1.5O0.5

Environment:

Oxidation product of eosphoite in granitic pegmatite.

IMA Status:

Approved IMA 1970

Locality:

Daib-East farm, Karibib, Namibia.

Name Origin:

Named for Theodor K. A. Ernst (1904-), mineralogist, University of Erlangen, Germany.

Physical Properties:

Cleavage:

[010] Good, [100] Good

Color:

yellow brown.

Density:

3.07

Diaphaniety:

Translucent

Habits:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Aggregates - Made of numerous individual crystals or clusters.,

Hardness:

3-3.5 - Calcite-Copper Penny

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .