Biotite Vs Brookite
Origin
Not Available
Russia
Color
Brown, Yellow, White, Brown, Greenish, Yellow, White
Red, Reddish, Brown, Black, Brown, Reddish, orange
For which Rashi?
Not Available
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Planet
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Element of Planets
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Finger
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Ring Metal
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Energy
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Deities
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Not to wear with
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Powers
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Planetary
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Talisman
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Solubility
Not Available
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Durability
Not Available
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Specific Gravity
2.7-3.3
3.87-4.14
Fracture
Uneven, Even, Yellow, White
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Perfect on the {001}
Poor on {120}, in traces on {001}
Mohs Hardness
2.5-3.0
5.5-6
Chemical Composition
K(Mg,Fe++)3[AlSi3O10(OH,F)2
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Pearly
Adamantine
Pleochroism
Strong
Very weak
Dispersion
Not Available
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Transparency
Not Available
Gemmological Tables (2004) More from other references
Refractive Index
1.565-1.625
2.583-2.741
Optic Character
Not Available
Not Available
Crystal System
monoclinic
Orthorhombic
Birefringence
0.03-0.07
0.117
Clarity
Not Available
Gemmological Tables (2004) More from other references
Neurological
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Cardiovascular
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Respiratory
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Reproductive
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Digestive
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Psychology
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Healing
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Qualities Associated
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Biotite Vs Brookite Fracture
Fracture is an important parameter when you compare Biotite and Brookite Physical Properties. It is necessary to understand the significance of these properties, before you compare Biotite Vs Brookite 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 Biotite is Even, Uneven, White and Yellow. Brookite fracture is Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Subconchoidal.
Biotite Vs Brookite Luster
A primary knowledge about Biotite vs Brookite 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. Biotite exhibits Pearly and Vitreous luster. Brookite, on other hand, exhibits Adamantine luster.