Formula: CaBe(PO4)(OH)
Origin of name: From hydroxyl and herderite
Crystal system: Monoclinic
Crystal class: 2/m
Twinning: Very common on {110} or {100}
Unit cell: a = 9.80 Ǻ, b = 7.67 Ǻ, c = 4.81 Ǻ, β = 90.0°
Colour: Colourless, pale yellow, greenish white, light green, green-blue
Diaphaneity:
Luster:
Habit: Crystals stout prismatic to thick tabular; botryoidal crusts, radial fibrous aggregates
Hardness: 5 to 5.5
Specific gravity: 2.94
Cleavage: 1; {110} interrupted
Tenacity: Subconchoidal
Streak:
Synonyms/varieties:
Comments: Series with herderite
| 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 |