Glossary of Mineral Terminology

This section explains some of the more specialized terminology used in the industry to describe mineral and crystal attributes, shapes, and features.

SectionDescriptionView
Crystal Habits & Growth PatternsCrystal habit is a technical term which describes the actual shape of a crystal. Growth pattern describes how groups of these shapes form together. Some of the descriptive crystal habits and growth patterns include: View Glossary
Mohs HardnessHardness is measured by the mohs scale. For each number, an example mineral is given. 1 is the softest (Talc) and 10 is the hardest mineral known to humans (Diamonds). Note that the scale is not linear, it is logarithmic. View Glossary
LusterLuster describes the surface appearrance of a mineral. This is one of the key diagnostic features of a mineral. View Glossary
Optical PhenomenaOptical phenomena describe distinctive "plays of light" or "color changes" that occur at or near the surface of minerals, that can be described in distinctive terms. View Glossary
Industry TerminologyThese are some peculiar terms you might have heard from mineral dealers and collectors and thought huh? What are you talking about? View Glossary
ClassificationSome general classifications are used in the collection to differentiate specimens from various domains of science.View Glossary

Classification

Some general classifications are used in the collection to differentiate specimens from various domains of science.

ElementElements are the building blocks of the universe which appear on the periodic table. Minerals are made up of one more more elements in a repeating matrix..
FossilFossils are lithified life forms from the ancient past.
 
Hydrothermal RockHydrothermal rocks are metamorphic rocks that have been altered by exposure to hot gases and liquids.
Igneous RockIgneous rocks are generally formed in magma or lava, and are composed of mineral types on the bowen reaction series.
Metamorphic RockMetamorphic rocks form through the transformation of existing minerals and rocks by forces of pressure and heat.
MineralMinerals are naturally occurring inorganic solids with an orderly, internally repeating crystalline structure.
 
MineraloidMineraloids resemble minerals but may not have an orderly repeating internal structure, due to the faster rate of cooling that they undergo during their formation.
 
Sedimentary RockSedimentary rocks are formed due to processes of weathering, erosion, cementation and lithification.
ShellShells are concretions of calcium carbonate formed by marin life.
 
SuppliesSupplies are critical to the study of minerals and rocks.


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