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Scoria vs. Pumice — What's the Difference?

Scoria vs. Pumice

Difference Between Scoria and Pumice

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Scoria

Scoria is a highly vesicular, dark-colored volcanic rock that may or may not contain crystals (phenocrysts). It is typically dark in color (generally dark brown, black or purplish red), and basaltic or andesitic in composition.
Jan 06, 2022

Pumice

Pumice ( ), called pumicite in its powdered or dust form, is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals. It is typically light colored.
Jan 06, 2022

Scoria

(Geology) Porous cinderlike fragments of dark lava. Also called cinders, slag.
Jan 06, 2022

Pumice

A light, porous, glassy lava, used in solid form as an abrasive and in powdered form as a polish and an abrasive.
Jan 06, 2022

Scoria

(Metallurgy) The refuse of a smelted metal or ore; slag. Also called cinder.
Jan 06, 2022
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Pumice

To clean, polish, or smooth with pumice.
Jan 06, 2022

Scoria

The slag or dross that remains after the smelting of metal from an ore.
Jan 06, 2022

Pumice

A light, porous type of pyroclastic igneous rock, formed during explosive volcanic eruptions when liquid lava is ejected into water or air as a froth containing masses of gas bubbles, which are frozen into the rock as the lava solidifies.
Jan 06, 2022

Scoria

(geology) Rough masses of rock formed by solidified lava, and which can be found around a volcano's crater.
Jan 06, 2022

Pumice

(transitive) To abrade or roughen with pumice.
Jan 06, 2022

Scoria

The recrement of metals in fusion, or the slag rejected after the reduction of metallic ores; dross.
Jan 06, 2022

Pumice

A very light porous volcanic scoria, usually of a gray color, the pores of which are capillary and parallel, giving it a fibrous structure. It is supposed to be produced by the disengagement of watery vapor without liquid or plastic lava. It is much used, esp. in the form of powder, for smoothing and polishing. Called also pumice stone.
Jan 06, 2022

Scoria

Cellular slaggy lava; volcanic cinders.
Jan 06, 2022

Pumice

A light glass formed on the surface of some lavas; used as an abrasive
Jan 06, 2022

Scoria

The scum formed by oxidation at the surface of molten metals
Jan 06, 2022

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