Colorless, Light yellow, Dark yellow, Brown, Brownish red.
Density:
3.51 - 3.55, Average = 3.53
Diaphaneity:
Translucent
Fracture:
Brittle - Uneven - Very brittle fracture producing uneven fragments.
Habit:
Pistolitic - > 3mm rounded spherical grains.
Habit:
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Habit:
Tabular - Form dimensions are thin in one direction.
Hardness:
6 - Orthoclase
Luster:
Vitreous - Dull
Streak:
yellow
Optical Properties of Lavenite
Gladstone-Dale:
CI meas= 0.11 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= 0.105 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1975,KPDmeas= 0.1964,KC= 0.2208 Ncalc = 1.77 - 1.78
Optical Data:
Biaxial (-), a=1.67, b=1.69, g=1.72, bire=0.0500, 2V(Calc)=80, 2V(Meas)=40-70. Dispersion r < v perceptible.
Pleochroism (x):
colorless or pale yellow.
Pleochroism (y):
colorless or pale greenish.
Pleochroism (z):
very pale yellow or orange to brown yellow.
Calculated Properties of Lavenite
Electron Density:
Bulk Density (Electron Density)=3.36 gm/cc note: Specific Gravity of Lavenite =3.51 gm/cc.
Fermion Index:
Fermion Index = 0.03 Boson Index = 0.97
Photoelectric:
PELavenite = 37.13 barns/electron U=PELavenite x rElectron Density= 124.83 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Lavenite is Not Radioactive
Lavenite Classification
Dana Class:
56.02.04.04(56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O
(56.02)with cations in [4] and/or >[4] coordination
Chemical Formula: 
