Siderite Vs Astrophyllite
Origin
Brazil
Canada, Russia
Color
Yellow, Brown, gray, Greenish
Brown, Yellow, Greenish, Brown, Yellow, Greenish, Brown, Brownish, Red, Yellow
Streak
White
Brown, White, Brown, White
For which Rashi?
Not Available
Not Available
Planet
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Element of Planets
Not Available
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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
Brittle
Not Available
Solubility
Not Available
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Durability
Not Available
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Specific Gravity
3.83-3.89
3.2-3.4
Fracture
Uneven, Conchoidal, UnevenArthur Thomas, Brittle
Uneven, Brittle, Metallic
Cleavage
Perfect on {01 1 1}
Perfect on [001] imperfect on [100]
Chemical Composition
Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Luster
Pearly
Greasy, Pearly
Pleochroism
Not Available
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Dispersion
Not Available
Not Available
Transparency
Transparent, Translucent
Translucent
Refractive Index
1.633-1.875
1.678-1.758
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Triclinic
Birefringence
0.242
0.050
Clarity
Transparent
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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Siderite Vs Astrophyllite Fracture
Fracture is an important parameter when you compare Siderite and Astrophyllite Physical Properties. It is necessary to understand the significance of these properties, before you compare Siderite 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 Siderite is Brittle, Conchoidal, Uneven and UnevenArthur Thomas. Astrophyllite fracture is Brittle, Metallic and Uneven.
Siderite Vs Astrophyllite Luster
A primary knowledge about Siderite 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. Siderite exhibits Pearly luster. Astrophyllite, on other hand, exhibits Greasy and Pearly luster.