Anhydrite Vs Astrophyllite
Origin
Mexico
Canada, Russia
Color
Colorless, Blue, Violet, White, Brown, rose, gray
Brown, Yellow, Greenish, Brownish, Red
Streak
White
Brown, White
Specific Gravity
2.90-2.98
3.2-3.4
Fracture
Conchoidal
Uneven
Cleavage
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
Perfect on [001] imperfect on [100]
Chemical Composition
CaSO 4Michael 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
Greasy, Pearly
Pleochroism
For violet varieties
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Transparency
Transparent
Translucent
Refractive Index
1.570-1.614
1.678-1.758
Crystal System
Orthorhombic
Triclinic
Birefringence
0.042-0.044
0.050
Clarity
Transparent
Translucent
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
Supports heart health
Supports heart health
Respiratory
Good
Excellent
Psychology
Calmness
Self-Reflection
Healing
Emotional healing
Spiritual healing
Qualities Associated
Acceptance
Self-Reflection
Anhydrite Vs Astrophyllite Fracture
Fracture is an important parameter when you compare Anhydrite and Astrophyllite Physical Properties. It is necessary to understand the significance of these properties, before you compare Anhydrite 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 Anhydrite is Conchoidal. Astrophyllite fracture is Uneven.
Anhydrite Vs Astrophyllite Luster
A primary knowledge about Anhydrite 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. Anhydrite exhibits Pearly and Greasy luster. Astrophyllite, on other hand, exhibits Greasy and Pearly luster.