The chemical composition of the mineraloid Lechatelierite is indicated by SiO2, a Fused Silicon Dioxide. This is known as the mineraloid Lechatelierite. Hence, this Lechatelierite belongs to the Mineraloids mineral class. This specimen is considered as a mineraloid because it lacks crystal structure. This Lechatelierite is also a member of the Quartz group of minerals. [...]
The chemical composition of the Fulgarite is indicated by SiO2, a Fused Silicon Dioxide. This Fulgarite is known as a mineraloid Lechatelierite. Hence, this Fulgurite belongs to the Mineraloids mineral class. This specimen is considered as a mineraloid because it lacks crystal structure. This Fulgurite is also a member of the Quartz group of minerals. [...]
The chemical composition of the mineraloid Amber is indicated by the approximated formula C10H16O, a Succinic Acid. Amber is a fossil tree resin that has achieved a stable state through loss of volatile constituents and undergo chemical change after burial in the ground. It is a fossilized resin of the now extinct conifer trees and [...]
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The members of this mineraloid class, which is considered unofficial mineral class by most mineralogists, are more often mistaken as minerals and they are actually sometimes classified as minerals. But these materials lack the necessary crystalline structure in order to be considered as minerals. Some members of this unofficial class like pearl and amber are [...]