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Image of Kaolinite, Albite, Halloysite (var. hkl), Illite-Smectite 12.0A, Montmorillonite, Orthoclase and Quartz in specimen 'API13 Kaolinite / Halloysite' [CSIRO].
(C) 2025 CSIRO Mineral Resources. All rights reserved.
White globular aggregate of the very rare Mg borate halurgite from the type and only known locality worldwide: Chelkar Salt Dome, Aksai Valley, Shalkar, Aktobe Province, Kazakhstan. Ex Vandenbroucke Museum collection from Waregem, Belgium.
Photo by David Hospital, via Wikimedia Commons, CC-BY-SA-4.0
UV fluorescence image of hardystonite (blue), with clinohedrite (orange), calcite (red), and willemite (green), from Franklin, Sussex Co., New Jersey, USA
Hedenbergite from the world famous deposits of Dal’negorsk, in the Russian far east. The diverging spray of variegated green, well terminated, and lustrous crystals to 9 cm (showing individual unobstructed faces to 6 cm), is occasionally dotted with round
12 mm crystal of Helvite (orange) in matrix of feldspar (pink) with microcrystals of muscovite (green), from Tongbai County, Nanyang Prefecture, Henan Province, China
