Kōrero: Gemstones

Greywacke pebbles with quartz veins

Greywacke pebbles with quartz veins

This selection of greywacke pebbles is from Ōwhiro Bay, Wellington. Greywacke is a hard, grey sandstone, often with fractures that are filled with quartz veins. These range in width from paper-thin to several millimetres.

Te whakamahi i tēnei tūemi

Te Ara - The Encyclopedia of New Zealand
Photograph by Alastair McLean

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Ngā whakaahua me ngā rauemi katoa o tēnei kōrero

Te tuhi tohutoro mō tēnei whārangi:

Jocelyn Thornton, 'Gemstones - Quartz', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/photograph/5121/greywacke-pebbles-with-quartz-veins (accessed 12 December 2019)

He kōrero nā Jocelyn Thornton, i tāngia i te 12 Jun 2006