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Soil Science: Soil Mineralogy
Definitions and Concepts
19
Science
Undergraduate 2
12/13/2012

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Term
Primary Minerals
Definition
Minerals that are apart of the parent material rock
Term
Silicates
Definition
Silicate chemical compunds contain silicon, oxygen, and one or more metals
Term
Secondary Minerals
Definition
A mineral created thru weathering or other processes on primary minerals
Term
Clays
Definition
Minerals that occur (mostly) in the clay fraction of soil
Term
Clay Minerals
Definition
Clay minerals are hydrous aluminium phyllosilicates, sometimes with variable amounts of iron, magnesium, alkali metals, alkaline earths, and other cations
Term
Oxides
Definition
An oxide is a chemical compound that contains at least one oxygen atom and one other element in its chemical formula
Term
Hydroxides
Definition
A compound containing the hydroxyl group -OH, specifically an acid or base containing the hydroxyl ion
Term
Oxyhydroxides
Definition
Any mixed oxide and hydroxide. FeOOH for example
Term
Aluminosilicates
Definition
a silicate that contains aluminum. The minerals feldspar and beryl are aluminosilicates.
Term
Nesosilicate
Definition
a mineral silicate (as olivine) that contains independent tetrahedral silicon-oxygen anionic groups SiO4 orthosilicate
Term
Inosilicate
Definition
any of a class of inorganic compounds that have structures characterized by silicate tetrahedrons arranged in chains
Term
Phyllosilicate
Definition
compound with a structure in which silicate tetrahedrons are arranged in sheets
Term
Tectosilicate
Definition
any member of a group of compounds with structures that have silicate tetrahedrons arranged in a three-dimensional lattice
Term
Mica
Definition
any of a group of hydrous potassium, aluminum silicate minerals. It is a type of phyllosilicate, exhibiting a two-dimensional sheet or layer structure
Term
Muscovite
Definition
abundant silicate mineral that contains potassium and aluminum. Because of its perfect cleavage, it can occur in thin, transparent, but durable sheets
Term
Biotite
Definition
also called black mica, a silicate mineral in the common mica group
Term
Quartz
Definition
widely distributed mineral of many varieties that consists primarily of silica, or silicon dioxide (SiO2)
Term
Feldspar
Definition
any of a group of aluminosilicate minerals that contain calcium, sodium, or potassium.
Term
Isomorphic Substitution
Definition
It is a replacement of elements or compounds in a mineral such that no alteration takes place in the form of crystal of that mineral
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