Mineral Species

Mineral Species

 

a natural chemical compound characterized by a definite crystalline structure. The species includes the aggregate of individual minerals that have the same (or monotypic) crystalline structure and chemical elemental composition. The chemical elemental composition may vary within definite limits as a result of isomorphic substitution of crystallochemical analogues for the main elements: for example, wolframite and its varieties huebnerite Mn[Wo4] and ferberite Fe[Wo4], plagioclase and its varieties albite and anorthite, and olivine and its varieties forsterite and fayalite.

References in periodicals archive ?
Topaz, Fluorite, Pseuclobrookite, Hematite and Hyalite Opal are all present as mineral species in lithophysal rhyolite of Topaz Mountain.
Washington, Nov 26 ( ANI ): A new analysis of Hadean mineralogy challenges the assumption that the mineral species found on Earth today are much the same as they were during Earth's first 550 million years-the Hadean Eon-when life emerged.
The suite of samples range from low grade to high grade and will be submitted for mineralogical determination of the mineral species present on the Property.
Further work already underway will provide more information on the uranium mineral species and the potential to extract uranium in a leach solution, but we have been especially encouraged by the tenor of intersections late in the program where ore-grades seen elsewhere are now being regularly intersected at Theseus.
In terms of the number of individual mineral species she had more than 100, which was an impressive achievement considering that at that time the majority of the mineral species known today had not been discovered.
The gallery also explores how the world's more than 4,000 different mineral species are classified by chemistry and crystal structure and how mineralogists and geologists use physical properties, such as hardness, transparency, and lustre, to identify each species.
For identification of the clay mineral species, samples were scanned from 3 to 20 [degrees] 2[Theta] angle at 0.
When two or more mineral species crystallize in a rock, elements are systematically distributed between them according to pressure and temperature conditions that tell us where they formed.
Natrolite is a tectosilica mineral species belonging to the zeolite group.
Up to 15 separate samples of copper-bearing material, ranging from low grade to high grade, will be submitted for mineralogical determination of the mineral species present on the Property.
To make their determination, the researchers used a software package known as MELTS to simulate the cooling and crystallization of potential Mercurian lavas with different chemical compositions, estimating the temperatures at which minerals would crystallize out of the molten lava and the abundances of different mineral species.
Low goethite: Mineralogical studies of the bauxite suggest that abundances of the problematic iron hydroxide mineral species called goethite are very low to absent.