Origin
Spain, Brazil, USA, Sri Lanka, Burma, Origins: Spain, Burma. Discovered in Andalusia (Spain)
Southern and central Africa
Color
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red
Brown, White, Greenish, gray, Green, Brownish
Specific Gravity
3.05-3.21
2.9-3.5
Fracture
Uneven, Subconchoidal, Splintery
Conchoidal
Cleavage
Good on {110}, poor on {100}
{110} Perfect, {???} Distinct, {???} Distinct
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Luster
Vitreous, Greasy
Vitreous, Pearly
Pleochroism
strongly trichroic
-
Transparency
Transparent, Translucent
Transparent
Refractive Index
1.627-1.650
1.603-1.690
Optic Character
-
Biaxial/+
Crystal System
Orthorhombic
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Birefringence
0.009-0.010
-9999
Clarity
Transparent
Transparent
Neurological
Enhances mental clarity and focus
Enhances brain function
Cardiovascular
Supports heart health
Supports heart health
Respiratory
Excellent
Good
Psychology
Perception
Peace
Healing
Physical healing
Emotional healing
Qualities Associated
Self-Realization
Self-discovery
Andalusite Vs Anthophyllite Fracture
Fracture is an important parameter when you compare Andalusite and Anthophyllite Physical Properties. It is necessary to understand the significance of these properties, before you compare Andalusite Vs Anthophyllite 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 Andalusite is Uneven, Subconchoidal and Splintery. Anthophyllite fracture is Conchoidal.
Andalusite Vs Anthophyllite Luster
A primary knowledge about Andalusite vs Anthophyllite 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. Andalusite exhibits Vitreous and Greasy luster. Anthophyllite, on other hand, exhibits Vitreous and Pearly luster.