Formula: PbCa3Zn4(SiO4)4
Origin of name: For Esper Larsen Jr., American petrologist
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: White
Diaphaneity: Transparent to translucent
Luster: Vitreous to somewhat greasy
Habit: Massive, coarse granular
Hardness: 5
Specific gravity: 4.28
Cleavage: 3; {010} and {100} distinct, {101} poor
Tenacity:
Streak:
Synonyms/varieties:
Comments: Fluoresces brilliant lemon yellow under SW
| Back to Alphabetical list | Colour photos | Thin sections | SEM images | TEM images | vibrational spectra description | IR spectra | Raman spectra | N-IR spectra | F-IR spectra | IES spectra |