Formula: Ca5(SiO4)2(CO3)
Origin of name: for J. Spurr, American geologist
Crystal system: monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: gray, lavender-gray
Diaphaneity: translucent
Luster: vitreous
Habit: crystals anhedral, massive, granular
Hardness: 5
Specific gravity: 3.0
Cleavage: 2; {001} distinct, {100} poor
Tenacity:
Streak:
Synonyms/varieties:
Comments: dimorphous with paraspurrite
| 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 |