Formula: Na(Mn,Mg,Zn)9(VSi9O28(OH)|(OH)3
Origin of name: Named for the Swiss naturalist Johann Jakob Scheuchzer (1672-1733), junior physician of the city of Zürich, curator of the Kunstkammer - a cabinet of natural history and curiosities - and he held the chair of physics and mathematics, University of Zürich. He did much work on Swiss geology and mineralogy that was essential for his time.
Crystal system: Triclinic
Crystal class: -1
Twinning:
Unit cell: a = 9.831 Å, b = 10.107 Å, c = 13.855 Å, α = 86.222°, β = 73.383°, γ = 71.987°
Colour: Yellow-orange
Diaphaneity: Transparent
Luster: Vitreous
Habit: Acicular
Hardness: 2.5
Specific gravity: 3.5
Cleavage: Distinct/good
Tenacity:
Streak: Yellow-orange
Synonyms/varieties:
Comments:
| Back to Alphabetical list | Colour photos | Optical properties/Thin sections | SEM images | TEM images | vibrational spectra description | IR spectra | Raman spectra | N-IR spectra | F-IR spectra | IES spectra |