Magnetite

Australasia Australia Victoria

ncat RD Diopside, Fluorapatite, Nepheline, Ilmenite, Magnetite, Leucite, Sanidine, Biotite, Clinopyroxene, Cosgrove quarry, Cosgrove, City of Greater Shepparton, Victoria

(Photo) Leucite as grey-white material in groundmass (“leucitite”). Elsewhere on specimen: Green prismatic diopside. Brown-black prismatic clinopyroxene. Nepheline as hexagonal prisms. Nepheline with hollow cores have been altered to analcime. Colourless needles of fluorapatite. Grey ilmenite as flat crystals. Magnetite as tetrahedrons. Colourless tiny tabular sanidine crystals. Brown pseudohexagonal biotite....

  • March 9, 2025
Australasia New Zealand

ncat JR2 G0W-NPG Magnetite, Chlorite, Siderite, Chabazite-Na, Orthoclase, Apatite, Bickers Quarry (Simpkins Quarry), Tokatoka, Kaipara District, Northland Region, North Island, New Zealand

Black magnetite octahedra, some with traces of chlorite on their faces. Some magnetite crystals are completely encased in chlorite. Blocky orthoclase crystals form part of the cavity lining. Brown sheaf or club-shaped siderite, yellow hexagonal chabazite-Na, and needles of apatite coated with chlorite. Width of view 6mm. Stack of 70...

  • July 1, 2024
Arkansas North and Central Americas United States

5805 A2980 523marps Fluorite, Chlorite, Magnetite, Albite, Pyrophanite, Natrolite(?), Big Rock Quarry (3M Quarry), Little Rock, Pulaski County, Arkansas, USA

Tiny purple octahedral fluorite crystalson albite with greenish chlorite, white prismatic crystals of natrolite(?), colourless quartz, and brown pyrophanite. Also on specimen magnetite, Ex Art Smith Collection (collected in 1979). Width of view 11.5mm. Stack of 57 images. Click on the image below for a higher resolution version. When I...

  • January 28, 2023
Europe Russia Type Locality

4660 Shadlunite, chalcopyrite, pentlandite, cubanite, magnetite, galena, sphalerite, and silver, Mayak Mine (Majak Mine), Talnakh Cu-Ni Deposit, Noril’sk, Putoran Plateau, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Eastern-Siberian Region, Russia

Type Locality. Polished section & analysis of this very rare lead-iron analogue of pentlandite, from the type locality, present as typical submicroscopic grains embedded in massive sulphides. Ex Raymond Hodgson Collection (4272) obtained in 2007. Includes shadlunite, chalcopyrite, pentlandite, cubanite, magnetite, galena, sphalerite, and silver.

  • July 24, 2020
Australasia New Zealand

1501 Hypersthene, Magnetite, Mt Tarawera, New Zealand

1501 Hypersthene (probably enstatite), and magnetite, from Mount Tarawera, Okataina, Rotorua District, Bay of Plenty Region (Te Moana-a-Toi), North Island, New Zealand. Photo width is 3.33mm and a 46 photo stack. Mount Tarawera last erupted in 1886 and was responsible for killing around 120 people, and destroying the famous Pink...

  • May 21, 2019

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