Astrophyllite Vs Andalusite
Origin
Canada, Russia
Spain, Brazil, USA, Sri Lanka, Burma, Origins: Spain, Burma. Discovered in Andalusia (Spain)
Color
Brown, Yellow, Greenish, Brownish, Red
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red
Streak
Brown, White
White
Specific Gravity
3.2-3.4
3.05-3.21
Fracture
Uneven
Uneven, Subconchoidal, Splintery
Cleavage
Perfect on [001] imperfect on [100]
Good on {110}, poor on {100}
Chemical Composition
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Luster
Greasy, Pearly
Vitreous, Greasy
Pleochroism
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
strongly trichroic
Transparency
Translucent
Transparent, Translucent
Refractive Index
1.678-1.758
1.627-1.650
Crystal System
Triclinic
Orthorhombic
Birefringence
0.050
0.009-0.010
Clarity
Translucent
Transparent
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
Supports heart health
Supports heart health
Respiratory
Excellent
Excellent
Psychology
Self-Reflection
Perception
Healing
Spiritual healing
Physical healing
Qualities Associated
Self-Reflection
Self-Realization
Astrophyllite Vs Andalusite Fracture
Fracture is an important parameter when you compare Astrophyllite and Andalusite Physical Properties. It is necessary to understand the significance of these properties, before you compare Astrophyllite Vs Andalusite 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 Astrophyllite is Uneven. Andalusite fracture is Uneven, Subconchoidal and Splintery.
Astrophyllite Vs Andalusite Luster
A primary knowledge about Astrophyllite vs Andalusite 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 exhibits Greasy and Pearly luster. Andalusite, on other hand, exhibits Vitreous and Greasy luster.