Minerals & Gemstone 480x104
Minerals & Gemstone 480x104
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Glossary of Terms
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ALL



Penetration twinning
Form of twinning where two or more crystals are intergrown. Specific habits include the fluorite twin, carlsbad twin, staurolite twin, and swallowtail twin.



Platinum Cubes Exhibiting Penetration Twinning



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