Formula: Ca3Si2O7
Origin of name: for G. Rankin, American chemist
Crystal system: monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: colourless, white
Diaphaneity: transparent
Luster: vitreous
Habit: massive, rounded or irregular grains
Hardness: 5.5
Specific gravity: 2.96 to 3.0
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments: dimorphous with kilchoanite
| 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 |