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HardnessTest duration 2 minutes 45 seconds HardnessTest HardnessTest	HardnessTest Video instructions for how to complete hardness testing for mineral identification. environment and nature natural resources business economy business and finance materials captionasr energy & resources metals & minerals minerals From Polly Bouker 1,672 plays 0
MineralIDTools_2 duration 50 seconds MineralIDTools_2 MineralIDTools_2	MineralIDTools_2 Video introduction to tools used during mineral identification. energy & resources human skin natural resources business organs (anatomy) economy business and finance environment and nature materials captionasr carbonate minerals metals & minerals minerals animal and human bodies From Polly Bouker 1,182 plays 0