Rammelsbergite
Encyclopedia
Rammelsbergite is a nickel
arsenide mineral
with formula NiAs2. It forms metallic silvery to tin white to reddish orthorhombic prismatic crystal
s, but is usually massive in form. It has a Mohs hardness of 5.5 and a specific gravity
of 7.1.
It was first described in 1854 from its type locality
in the Schneeberg District in Saxony
, Germany
. It was named after the German
chemist
and mineralogist, Karl Friedrich August Rammelsberg
.
Nickel
Nickel is a chemical element with the chemical symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile...
arsenide mineral
Arsenide mineral
An arsenide mineral is a mineral that contains arsenide as its main anion. Arsenides are grouped with the sulfides in both the Dana and Strunz mineral classification systems.- Examples :* algodonite Cu6As* domeykite Cu3As* löllingite FeAs2* nickeline NiAs...
with formula NiAs2. It forms metallic silvery to tin white to reddish orthorhombic prismatic crystal
Crystal
A crystal or crystalline solid is a solid material whose constituent atoms, molecules, or ions are arranged in an orderly repeating pattern extending in all three spatial dimensions. The scientific study of crystals and crystal formation is known as crystallography...
s, but is usually massive in form. It has a Mohs hardness of 5.5 and a specific gravity
Specific gravity
Specific gravity is the ratio of the density of a substance to the density of a reference substance. Apparent specific gravity is the ratio of the weight of a volume of the substance to the weight of an equal volume of the reference substance. The reference substance is nearly always water for...
of 7.1.
It was first described in 1854 from its type locality
Type locality (geology)
Type locality , also called type area or type locale, is the where a particular rock type, stratigraphic unit, fossil or mineral species is first identified....
in the Schneeberg District in Saxony
Saxony
The Free State of Saxony is a landlocked state of Germany, contingent with Brandenburg, Saxony Anhalt, Thuringia, Bavaria, the Czech Republic and Poland. It is the tenth-largest German state in area, with of Germany's sixteen states....
, Germany
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...
. It was named after the German
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...
chemist
Chemist
A chemist is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties such as density and acidity. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms...
and mineralogist, Karl Friedrich August Rammelsberg
Karl Friedrich August Rammelsberg
Karl Friedrich August Rammelsberg was a German mineralogist from Berlin, Prussia.He was educated for the medical profession and graduated in 1837 at Berlin University. In 1841 he became privatdozent in the university, and in 1845 professor extraordinary of chemistry...
.