Vivianite Vs Astrophyllite
Origin
Southern and central Africa
Canada, Russia
Color
Blue, Green, Colorless
Brown, Yellow, Greenish, Brownish, Red
Streak
White
Brown, White
Specific Gravity
2.64-2.70
3.2-3.4
Cleavage
{010} Perfect
Perfect on [001] imperfect on [100]
Chemical Composition
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Luster
Vitreous, Pearly
Greasy, Pearly
Pleochroism
Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael OâDonoghue
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Transparency
Transparent
Translucent
Refractive Index
1.560-1.640
1.678-1.758
Crystal System
-
Triclinic
Birefringence
0.054-0.075
0.050
Clarity
Transparent
Translucent
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
-
Supports heart health
Respiratory
Good
Excellent
Psychology
Hope
Self-Reflection
Healing
Emotional healing
Spiritual healing
Qualities Associated
Transformation
Self-Reflection
Vivianite Vs Astrophyllite Fracture
Fracture is an important parameter when you compare Vivianite and Astrophyllite Physical Properties. It is necessary to understand the significance of these properties, before you compare Vivianite 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. Astrophyllite fracture is Uneven.
Vivianite Vs Astrophyllite Luster
A primary knowledge about Vivianite 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. Vivianite exhibits Vitreous and Pearly luster. Astrophyllite, on other hand, exhibits Greasy and Pearly luster.