Chapter5Quiz Flashcards
What is the two different types of minerals
Silicon and oxygen tetrahedron is combine arrangement in different forms of silicon mineral
What is a mineral
It is a natural and inorganic set of physical properties
What is Moho hardness
It is a scale which the hardness of the mineral is rated
What is cleavage
A smooth flat material that splits
What is a material and crystal
The atom that forms in a crystal that always combine in a geometric pattern
What is luster and streak
Luster reflects light powdered form
What is fluorescence and phosphorescence
Ordinary light under a ultrasound turning red and some minerals will glow after the light is turned off
What is most common silicate
feldspar
Silicate minerals are the most common of Earth’s minerals and include quartz, feldspar, mica, amphibole, pyroxene, and olivine.
Silica tetrahedra, made up of silicon and oxygen, form chains, sheets, and frameworks, and bond with other cations to form silicate minerals.
What is 96 percent of the earth crust made up
Silicate minerals.
Ninety six percent of the earth’s crust is made up.
Silicon-oxygen tetrahedra.
What is a mineral that as basic structure that isolates
Isolated tetrahedra are separated by positively charged metal ions all around. This is for example the structure of the mineral olivine.
Tetrahedra form rings that are linked together by positively charged metal ions. This structure is for example found in the mineral tourmaline.
Tetrahedra share two of their oxygens with neighbors to form chains. Between the chains positively charged metal ions are inserted. This is the structural style found in the pyroxene family of minerals.
Two chains may combine to form double chains or ribbons. This structural style is found in the amphibole family of minerals.
When adjacent tetrahedra share the three oxygens in one tetrahedral plane, we produce sheets of silica tetrahedrons. These sheets can then be linked together by positively charged ions. This is the basic structure of micas (biotite, muscovite), and also of clay minerals.
Finally, when all four oxygens are linked to other tetrahedra, either by oxygen sharing or via an inserted metal ion, we get three-dimensional framework structures. This is the structural style of the mineral quartz, and of the feldspar family of minerals.
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