Tschernichite
Tschernichite is an IMA-recognized mineral species in the silicate class, with the chemical formula CaAl₂Si₆O₁₆·8H₂O.
It crystallizes in the tetragonal crystal system (space group C2/c).
Key properties: Mohs hardness 4.5; specific gravity 2.02; White streak; Vitreous luster; optically uniaxial.
IMA symbol Tni, IMA status: approved, named in 1989.
Found in vesicles in an olivine basalt, formed by hydrothermal action.
It is found associated with Zeolites, apophyllite, copper, quartz, aragonite, smectite.
The mineral was named to honor Rudy Warren Tschernich (1945{), amateur mineralogist specializing in zeolites, of Snohomish, Washington, USA.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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