Oligoclase Vs Cassiterite
Origin
Southern and central Africa
Sri Lanka
Color
Colorless, Brown, Greenish, gray
Black, Brownish, Reddish, Brown, Red, Yellow, White, Colorless, Green, gray
Streak
White
White, Brownish
Specific Gravity
2.62-2.67
6.86-7.03
Fracture
Uneven
Subconchoidal, Uneven, Conchoidal, Irregular
Cleavage
From the Greek, oligos and kasein, little cleavage.
{100} imperfect, {110} indistinct; partings on {111} or {011}
Chemical Composition
Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Adamantine, Greasy
Pleochroism
-
Pleochroic haloes have been observed. Dichroic in yellow
Transparency
-
Transparent, Translucent
Refractive Index
1.538-1.550
1.990-2.105
Crystal System
-
tetragonal
Birefringence
0.010
0.096-0.098
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
-
Supports heart health
Healing
Emotional healing
Emotional healing
Qualities Associated
Harmony
Manifestation
Oligoclase Vs Cassiterite Fracture
Fracture is an important parameter when you compare Oligoclase and Cassiterite Physical Properties. It is necessary to understand the significance of these properties, before you compare Oligoclase Vs Cassiterite 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 Oligoclase is Uneven. Cassiterite fracture is Subconchoidal, Uneven, Conchoidal and Irregular.
Oligoclase Vs Cassiterite Luster
A primary knowledge about Oligoclase vs Cassiterite 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. Oligoclase exhibits Vitreous luster. Cassiterite, on other hand, exhibits Adamantine and Greasy luster.