Hollandite Vs Astrophyllite
Origin
Not Available
Canada, Russia
Color
Grey, Black, gray
Brown, Yellow, Greenish, Brown, Yellow, Greenish, Brown, Brownish, Red, Yellow
Streak
Black
Brown, White, Brown, White
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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Tenacity
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Solubility
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Durability
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Specific Gravity
5.05
3.2-3.4
Fracture
Brittle, Metallic
Uneven, Brittle, Metallic
Cleavage
Distinct / Good, Prismatic
Perfect on [001] imperfect on [100]
Chemical Composition
Ba(Mn++++,Mn++)8O16
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Luster
Not Available
Greasy, Pearly
Pleochroism
Weak.
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Dispersion
Not Available
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Transparency
Not Available
Translucent
Refractive Index
Not Available
1.678-1.758
Optic Character
Not Available
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Crystal System
monoclinic
Triclinic
Birefringence
Not Available
0.050
Clarity
Not Available
Translucent
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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Hollandite Vs Astrophyllite Fracture
Fracture is an important parameter when you compare Hollandite and Astrophyllite Physical Properties. It is necessary to understand the significance of these properties, before you compare Hollandite Vs Astrophyllite 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 Hollandite is Brittle and Metallic. Astrophyllite fracture is Brittle, Metallic and Uneven.
Hollandite Vs Astrophyllite Luster
A primary knowledge about Hollandite vs Astrophyllite 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. Astrophyllite, on other hand, exhibits Greasy and Pearly luster.