5690 Zircon, Biotite, Taratimi Bay (Crater Bay), Mayor Island (Tuhua), Bay of Plenty Region, North Island, New Zealand July 14, 2020 Steve Australasia New Zealand Sharp and very thin crystals of biotite with white concertina zircon crystal (indicated by red arrow). Width 5.5mm. Stack of 100 images.
Scotland United Kingdom 4849 Fluorite, Quartz, Albite, Orthoclase, Biotite, Clauchlands Point, Lamlash, Isle of Arran, Strathclyde, Scotland, UK October 5, 2019
Australasia Australia Northern Territory 0814 Zircon, Harts Range, Northern Territory September 20, 2019
Australasia Australia Victoria 0555 Biotite, Starling Gap, Powelltown, Victoria, Victoria September 20, 2019
Europe Hungary ncat JP875 Chabazite-Ca, Analcime, Biotite, Saponite, Csódi Hill, Dunabogdány, Szentendre, Pest Co., Hungary June 29, 2022