Darwin Glass 2.5cm
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NZ$50.10
NZ$50.10
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Technically, Darwin Glass is not a mineral - but a frothy, pale-green-to-black siliceous glass known as 'impactite', which was formed when a meteorite struck Tasmania and vaporised rocks and soil, some 816,000 years ago.
It is usually very irregular, slaggy, with twisted stalactitic forms and with rare teardrop and disc-like shapes. Numerous bubble pits are present and the pieces are consequently of very low density and have a contorted appearance - described by early prospectors as "petrified kelp".
Darwin Glass is closely related to 'tektites' - droplets that were blasted high into the atmosphere by the initial impact.
Darwin Glass is also known to have been used by Tasmanian Aboriginal people for the production of stone tools as it flakes well, creating extremely sharp edges.
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It is usually very irregular, slaggy, with twisted stalactitic forms and with rare teardrop and disc-like shapes. Numerous bubble pits are present and the pieces are consequently of very low density and have a contorted appearance - described by early prospectors as "petrified kelp".
Darwin Glass is closely related to 'tektites' - droplets that were blasted high into the atmosphere by the initial impact.
Darwin Glass is also known to have been used by Tasmanian Aboriginal people for the production of stone tools as it flakes well, creating extremely sharp edges.
#1
1 available