Quartz Mineral Specimen, Quartz mineral specimen for use in classroom identification labs and exercises., Each

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QUARTZ | One of the most abundant minerals on Earth. The tightly packed framework of silica tetrahedral that makes up this mineral gives it a high hardness of 7, a lack of cleavage planes, and a distinct euhedral crystal habit GREAT FOR GEOLOGY CLASSROOMS | A must-have mineral for any specimen collection. Quartz is useful during lessons on mineral hardness, luster, and fracture GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identificatio