Novaculite
Designation for a variety of chert. It is a fine-grained hard rock composed mainly of extremely fine-grained to cryptocrystalline quartz. It can be white, gray…
Designation for a variety of chert. It is a fine-grained hard rock composed mainly of extremely fine-grained to cryptocrystalline quartz. It can be white, gray…
Commercial name used for a fuchsite-containing hornfels from Australia. It is also sometimes labeled (incorrectly) as a type of jade, jasper or bastite. It has…
Commercial name for green hornfels from South Africa, a metamorphic rock given its green color by inclusions of various green minerals such as chlorite, epidote…
The name bastite is primarily used in the trade for a fuchsite-containing chert from Western Australia, also known by the trade names Dragon Stone or…
Misleidende commerciële naam voor een massieve variëteit van grossulaar, een groen mineraal uit de granaatgroep. Vernoemd naar het voorkomen in Afrika en gebruikt als een…
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