Astrophyllite Vs Crocoite
Origin
Canada, Russia
Australia, Southern and central Africa
Color
Brown, Yellow, Greenish, Brownish, Red
Red, Yellow, orange
Streak
Brown, White
yellowish orange
Specific Gravity
3.2-3.4
5.90-6.10
Fracture
Uneven
Conchoidal
Cleavage
Perfect on [001] imperfect on [100]
{110} Distinct, {001} Indistinct, {100} Indistinct
Chemical Composition
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Greasy, Pearly
Adamantine
Pleochroism
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Distinctly trichroic
Transparency
Translucent
Transparent
Refractive Index
1.678-1.758
2.31-2.66
Crystal System
Triclinic
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n
Birefringence
0.050
-9999
Clarity
Translucent
Transparent
Neurological
Enhances mental clarity and focus
-
Cardiovascular
Supports heart health
Supports heart health
Respiratory
Excellent
Good
Psychology
Self-Reflection
Passion
Healing
Spiritual healing
Physical healing
Qualities Associated
Self-Reflection
Passion
Astrophyllite Vs Crocoite Fracture
Fracture is an important parameter when you compare Astrophyllite and Crocoite Physical Properties. It is necessary to understand the significance of these properties, before you compare Astrophyllite Vs Crocoite 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. Crocoite fracture is Conchoidal.
Astrophyllite Vs Crocoite Luster
A primary knowledge about Astrophyllite vs Crocoite 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. Crocoite, on other hand, exhibits Adamantine luster.