124

Augite on lava

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17g 8h 37m 44s
13/11/2026 16:03:00
Estimate
€ 50,00 / 100,00
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Description

Augite on lava

Cm 5X4,5X6,5
(Ca,Mg,Fe,Al)2(Si,Al)2O6 — clinopyroxene, monoclinic system, on a lava matrix
More information
Typical of the Vesuvius/Phlegraean Fields volcanic area (Italy), these are augite crystals embedded in a basaltic-tephritic lava matrix. They form through early crystallization within the magma before or during eruption (as phenocrysts), typically in Quaternary volcanic settings. Hardness 5.5–6.5 Mohs, greenish-black color , short prismatic habit.
A piece of great interest to collectors and volcanologists as direct evidence of magmatic processes; used in educational and museum displays; rarely used in jewelry due to low transparency .
Time auction 1251

Historia Naturalis

mon 26 October - fri 13 November 2026
The description sheets do not always indicate the state of conservation of the goods, we invite you to always request the condition report before making your offers
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