Formula: (Pb,Mo,[])8O8Cl2
Origin of name: for Reginald Parkinson, British mineral collector
Crystal system: tetragonal
Crystal class: 4/m 2/m 2/m
Twinning:
Unit cell:
Colour: red to purplish red
Diaphaneity: translucent
Luster: adamantine
Habit: crystals 0.1 to 0.3 mm in compact clusters or patches to 3 mm
Hardness: 2 to 2.5
Specific gravity: 7.32
Cleavage: 3; {001} perfect, {100} fair, {350} indistinct
Tenacity:
Streak: scarlet to red
Synonyms/varieties:
Comments: [] indicates a vacany or a missing cation at this site
| 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 |