Gedrite Vs Astrophyllite
Origin
Southern and central Africa
Canada, Russia
Color
Brown, Green, gray, White
Brown, Yellow, Greenish, Brownish, Red
Streak
gray, White
Brown, White
Specific Gravity
3.15-3.259
3.2-3.4
Cleavage
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
Perfect on [001] imperfect on [100]
Chemical Composition
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Luster
Vitreous
Greasy, Pearly
Pleochroism
Weak to moderate
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Transparency
Transparent
Translucent
Refractive Index
1.625-1.718
1.678-1.758
Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Triclinic
Birefringence
-9999
0.050
Clarity
Transparent
Translucent
Neurological
-
Enhances mental clarity and focus
Cardiovascular
-
Supports heart health
Psychology
Focus
Self-Reflection
Healing
-
Spiritual healing
Qualities Associated
Protection
Self-Reflection
Gedrite Vs Astrophyllite Fracture
Fracture is an important parameter when you compare Gedrite and Astrophyllite Physical Properties. It is necessary to understand the significance of these properties, before you compare Gedrite 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.
Gedrite Vs Astrophyllite Luster
A primary knowledge about Gedrite 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. Gedrite exhibits Vitreous luster. Astrophyllite, on other hand, exhibits Greasy and Pearly luster.