Cassiterite Vs Bertrandite
Origin
Sri Lanka
Southern and central Africa
Color
Black, Brownish, Reddish, Brown, Red, Yellow, White, Colorless, Green, gray
Colorless, Yellow
Streak
White, Brownish
White
Specific Gravity
6.86-7.03
2.59-2.60
Fracture
Subconchoidal, Uneven, Conchoidal, Irregular
-
Cleavage
{100} imperfect, {110} indistinct; partings on {111} or {011}
{001} Perfect, {110} Distinct, {101} Distinct
Chemical Composition
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Luster
Adamantine, Greasy
Vitreous
Pleochroism
Pleochroic haloes have been observed. Dichroic in yellow
none.
Transparency
Transparent, Translucent
TransparentAnthony et al
Refractive Index
1.990-2.105
1.583-1.614
Crystal System
tetragonal
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21
Birefringence
0.096-0.098
-9999
Clarity
Transparent
TransparentAnthony et al
Neurological
Enhances mental clarity and focus
-
Cardiovascular
Supports heart health
Promotes mental clarity
Healing
Emotional healing
Emotional healing
Qualities Associated
Manifestation
Creativity
Cassiterite Vs Bertrandite Fracture
Fracture is an important parameter when you compare Cassiterite and Bertrandite Physical Properties. It is necessary to understand the significance of these properties, before you compare Cassiterite Vs Bertrandite fracture. Whenever a gemstone chip breaks, it leaves a characteristic line along its breakage. Such lines are known as fracture and are used to identify the gemstones in their initial stages of production when they are in the form of rough minerals. Fracture is usually described with the terms “fibrous” and “splintery” to denote a fracture that usually leaves elongated and sharp edges. Fracture observed in Cassiterite is Subconchoidal, Uneven, Conchoidal and Irregular.
Cassiterite Vs Bertrandite Luster
A primary knowledge about Cassiterite vs Bertrandite luster is useful in apparent identifications of these gemstones. Luster is the measure of light that gets reflected when incident on a finished cut gemstone. There are two major types of lusters: Silky and Adamantine. Since luster varies between two crystals of even the same gemstone, luster is limited to basic identification criteria. Cassiterite exhibits Adamantine and Greasy luster. Bertrandite, on other hand, exhibits Vitreous luster.