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[[Image:Bismuth_hopper_crystal.jpg|thumb|250px|A hopper crystal of metallic bismuth]]
A '''Hopper [[crystal]]''' is one with faces that are [[hollow]]ed as in the "stepped" faces of some [[halite]] crystals.

==Sources==
*Pellant, Chris. ''The Complete Book of Rocks and Minerals'', Dorling Kindersley Inc.: New York (1995), ''p. 251''

[[category:Crystallography]]
nsTeam1RO, nsTeam1RW, nsTeam1_talkRO, nsTeam1_talkRW
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