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The only mineral in this classification is Wulfinite. This is apart of the Tetragonal System. Crystal Snowman Pendant Instructions.

Wulfinite is described in multiple online sources, as addition to our editors' articles, see section below for printable documents, Wulfinite books and related discussion.

Suggested Pdf Resources

Crystallography What is crystallography? Symmetry Reflection
Tetragonal-pyramidal = 4. – No pyramid faces on bottom due to lack of m planes. – Wulfinite.
External Symmetry of Crystals, 32 Crystal Classes
Aug 12, 2010 crystal. Wulfinite is the only mineral known to crystallize in this class. External Symmetry of Crystals, 32 Crystal Classes.
Neue Mineralfunde in den österreichischen Ostalpen, XVIII
ein Hohlraum auf, in welchem ebenso schöne Wulfinite vorkamen.

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Suggested Web Resources

"Wulfinite" Fine Art Print by redhawk | RedBubble
Buy "Wulfinite" Photographic Print by redhawk | RedBubble
Mystic Journey - New Age Products Online
Minerals from Elmwood TN Mines, for Sale from Private Collection
Classes of Crystals |
It does not have planes facing each other, nor does a face sit on the bottom. The only mineral in this classification is Wulfinite.

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