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Lithophysa

A lithophysa (plural lithophysae, from Greek lithos "stone" + phusa "bubble") is a felsic volcanic rock with a spherulitic structure and interior cavity with concentric chambers. Its outer shape is spherical or lenticular. They vary in size from very small up to twelve feet in diameter depending on the age of the magma chamber. These rocks are usually…

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FelsicVolcanicRockObsidianRhyolite
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Lithophysa

Nodes26
Edges25
Triples1
Avg. degree1.92
Density0.076923
Components1

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lithophysae obsidian usually minerals cavities also crystals agate opal chalcedony silica cavity diameter rocks found lavas may snowflake partially etc

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SubjectPredicateObjectConfidenceSrc
soluble mineralsinstance ofThe term vug is also used for similar cavities although the meaning of vug is usually restricted to cavities in rocks formed by the removal of material0.80text

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