Cassiterite Vs Covellite
Color
Black, Brownish, Reddish, Brown, Red, Yellow, White, Colorless, Green, gray
Blue, Black
Streak
White, Brownish
Grey, Black, gray
Tenacity
Brittle
Flexible
Specific Gravity
6.86-7.03
4.6-4.76
Fracture
Subconchoidal, Uneven, Conchoidal, Irregular
-
Cleavage
{100} imperfect, {110} indistinct; partings on {111} or {011}
Perfect on {0001}
Chemical Composition
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Luster
Adamantine, Greasy
Resinous
Pleochroism
Pleochroic haloes have been observed. Dichroic in yellow
Marked
Transparency
Transparent, Translucent
OpaqueAnthony et al
Refractive Index
1.990-2.105
1.45-2.62
Crystal System
tetragonal
Hexagonal
Birefringence
0.096-0.098
-9999
Clarity
Transparent
OpaqueAnthony et al
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
Supports heart health
Supports heart health
Psychology
Focus
Transformation
Healing
Emotional healing
Emotional healing
Qualities Associated
Manifestation
Manifestation
Cassiterite Vs Covellite Fracture
Fracture is an important parameter when you compare Cassiterite and Covellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Cassiterite Vs Covellite 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 Covellite Luster
A primary knowledge about Cassiterite vs Covellite 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. Covellite, on other hand, exhibits Resinous luster.