Cavansite and Foitite Optical Properties

Cavansite

Foitite

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous, Pearly

Vitreous

1.2 Pleochroism

Visible: X=Z= colorless Y= blue

Strong: pale lavender dark blueAnthony et al

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

TranslucentAnthony et al, Translucent

1.5 Refractive Index

1.542Not Available

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m

1.8 Birefringence

0.009Not Available

0 0.296

1.9 Clarity

Not Available

TranslucentAnthony et al

Cavansite and Foitite Optic Character

Cavansite and Foitite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Cavansite and Foitite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Cavansite and Foitite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Compare Blue Gemstones

Cavansite Vs Riebeckite

Cavansite Vs Plumbogummite

Cavansite Vs Lawsonite

Cavansite and Foitite Transparency

Similar to their colors, Cavansite and Foitite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Cavansite is Not Available while Cavansite is Not Available in appearance.