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Volcanic Scoria Slide

Algae Stromatolite Slide

£18.00 ex VAT

Volcanic Tuff Slide

£18.00 ex VAT

£18.00 ex VAT

Volcanic scoria thin section slide exhibiting the highly vesicular nature of this extrusive volcanic rock. Typically volcanic scoria is basaltic or andesitic in composition; these magmas are typically runnier which results in a denser rock with larger vesicles.

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Volcanic scoria thin section slide exhibiting the highly vesicular nature of this extrusive volcanic rock. Scoria forms as lava is erupted from a volcano. The lower pressures allow gases which were once dissolved in the magma to come out of solution. The gases produce holes or vesicles in the molten rock and as the rock cools and solidifies the bubbles become frozen. Typically volcanic scoria is basaltic or andesitic in composition; these magmas are typically less viscous than those which form pumice and as such scoria is denser than pumice with larger vesicles. Our thin sections clearly depict the vesicular nature of this material. This particular material is from Italy. The section is made to 30 microns thickness and the glass is 46 x 27 mm in size with a cover slip. Supplied in a protective card sleeve with a label, ideal for microscopy.

Weight 80 g

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