Tourmaline nomenclature has gotten pretty complex in recent times, often with multiple species in the one crystal! This specimen was originally labelled as elbaite, but has since been found to be fluor-elbaite with a possible fluor-liddicoatite outer rim. From Ågskardet, Holandsfjord, Meløy, Nordland, Norway. Please follow and like us:

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“Grape Agate“, a highly botryoidal, amethystine microcrystalline-quartz (amethyst)/chalcedony from the Mamuju area (Mamudju; Manakarra), Sulawesi Barat Province (West Sulawesi Province), Sulawesi (Celebes), Indonesia. This specimen also has crystals of what appear to be stilbite. Although stilbite is not recorded on Mindat from this location, another zeolite, phillipsite, is. Joe George photo. Please follow and like us:

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Calcite, sphalerite, chalcopyrite, quartz and pyrite from the Bor Pit (Boron Pit; Bor Quarry), Dal’negorsk B deposit, Dal’negorsk (Dalnegorsk; Tetyukhe; Tjetjuche; Tetjuche), Kavalerovo Mining District, Primorskiy Kray, Far-Eastern Region, Russia. The sphalerite is enclosing chalcopyrite. Specimen is 40mm wide. Please follow and like us:

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Melkovite, U-Mo occurrence, Shunak Mts, Mointy Railway Station, Mointy, Balkhash Region, Karagandy Province, Kazakhstan. Type Locality. Certified (microprobe analyzed) sulfur-yellow melkovite, a rare hydrous Ca-Fe phosphate-molybdate, known only from the single locality in the world. Associated minerals are represented by dark-violet (almost black) fluorite, feldspars, hematite and very minor and microscopic admixtures of other molybdates – […]

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