Pyroxenes
Query URLs
https://term.museum-digital.de/md-de/tag/59436
- Note
- The pyroxenes (commonly abbreviated Px) are a group of important rock-forming inosilicate minerals found in many igneous and metamorphic rocks. Pyroxenes have the general formula XY(Si,Al)2O6, where X represents calcium (Ca), sodium (Na), iron (Fe II) or magnesium (Mg) and more rarely zinc, manganese or lithium, and Y represents ions of smaller size, such as chromium (Cr), aluminium (Al), magnesium (Mg), cobalt (Co), manganese (Mn), scandium (Sc), titanium (Ti), vanadium (V) or even iron (Fe II or Fe III). Although aluminium substitutes extensively for silicon in silicates such as feldspars and amphiboles, the substitution occurs only to a limited extent in most pyroxenes. They share a common structure consisting of single chains of silica tetrahedra. Pyroxenes that crystallize in the monoclinic system are known as clinopyroxenes and those that crystallize in the orthorhombic system are known as orthopyroxenes.
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Hedenbergit
Barna, rudas halmaz, tetején...
Object information
Image: Herman Ottó Múzeum - CC BY-NC-SA -
Hedenbergit, hibschit, apatit, magnetit, ettringit, tobermorit
Bazalt kőzetzárványainak...
Object information
Image: Herman Ottó Múzeum, Miskolc - CC BY-NC-SA -
Hedenbergit
Sötét szürkészöld, üvegfényű,...
Object information
Image: Herman Ottó Múzeum, Miskolc - CC BY-NC-SA -
Hedenbergit
Fekete rostos-rudas halmaz
Object information
Image: Herman Ottó Múzeum, Miskolc - CC BY-NC-SA -
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