Obsidian and Gossan Definition

Obsidian

Gossan

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Definition

Origin

Discoverer

Etymology

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Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth

Ethiopia

Obsius

From Latin obsidianus, misprint of Obsianus (lapis) (stone) of Obsius

Igneous Rocks

Durable Rock, Medium Hardness Rock

Volcanic

Opaque Rock

Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.

Indonesia

Cornish Gossen

From Cornish gossen from gos, blood from Old Cornish guit

Metamorphic Rocks

Durable Rock, Medium Hardness Rock

Fine Grained Rock, Medium Grained Rock, Opaque Rock

Definition of Obsidian and Gossan

The general Obsidian and Gossan definition can be stated as: . On the other hand, . Along with definition of Obsidian and Gossan, get to know about Obsidian vs Gossan. Get to know more information about Obsidian and Gossan origin and discoverer, etymology and class.

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History of Obsidian and Gossan

The history of Obsidian and Gossan gives information about where the rock was found and who was its discoverer. Almost each and every aspect of Earth's history is recorded in rocks be it the volcanoes which were erupted or the plants, animals and organisms which are now extinct, as rocks are present from millions of years.

Obsidian and Gossan Origin and Discoverer

Obsidian and Gossan definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Obsidian vs Gossan. In this section, you will know about Obsidian and Gossan Origin and Discoverer. Origin of Obsidian and Gossan are . It is interesting to know the name of Obsidian and Gossan discoverer. The discoverer of Obsidian and Gossan are .

Etymology of Obsidian and Gossan

Along with Obsidian and Gossan definition, know more about the etymology of Obsidian and Gossan. Etymology of Obsidian and Gossan gives information about origin and formation of a particular rock. Know more about Formation of Obsidian and Formation of Gossan. The etymology of Obsidian is while that of Gossan is . The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Obsidian and Gossan belong to . The sub-class, group and other categories of Obsidian and Gossan are listed below.

For Obsidian,