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