Hollandite

Astrophyllite

Hollandite Vs Astrophyllite

Hollandite

Astrophyllite

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1 Astrology

1.1 Origin

Not Available

Canada, Russia

1.2 Color

Grey, Black, gray

Brown, Yellow, Greenish, Brown, Yellow, Greenish, Brown, Brownish, Red, Yellow

1.3 Streak

Black

Brown, White, Brown, White

1.4 For which Rashi?

Not Available

1.5 Planet

Not Available

1.6 Element of Planets

Not Available

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Not Available

1.9 Deities

Not Available

1.10 Not to wear with

Not Available

1.11 Powers

Not Available

1.12 Birthstone

1.12.1 Planetary

Not Available

1.12.2 Talisman

Not Available

2 Physical Properties

2.1 Tenacity

Not Available

2.2 Solubility

Not Available

2.3 Durability

Not Available

2.4 Specific Gravity

5.053.2-3.4

1 7.18

2.5 Fracture

Brittle, Metallic

Uneven, Brittle, Metallic

2.6 Cleavage

Distinct / Good, Prismatic

Perfect on [001] imperfect on [100]

2.7 Mohs Hardness

4-63

2 10

2.8 Chemical Composition

Ba(Mn++++,Mn++)8O16

(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

3 Optical Properties

3.1 Luster

Not Available

Greasy, Pearly

3.2 Pleochroism

Weak.

Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow

3.3 Dispersion

NANA

0.007 1

3.4 Transparency

Not Available

Translucent

3.5 Refractive Index

Not Available1.678-1.758

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

monoclinic

Triclinic

3.8 Birefringence

Not Available0.050

0 0.296

3.9 Clarity

Not Available

Translucent

4 Benefits

4.1 Physical

4.1.1 Neurological

Not Available

4.1.2 Cardiovascular

Not Available

4.1.3 Respiratory

Not Available

4.1.4 Reproductive

Not Available

4.1.5 Digestive

Not Available

4.2 Psychology

Not Available

4.3 Healing

Not Available

4.4 Qualities Associated

Not Available

Hollandite Vs Astrophyllite Fracture

Fracture is an important parameter when you compare Hollandite and Astrophyllite Physical Properties. It is necessary to understand the significance of these properties, before you compare Hollandite 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 Hollandite is Brittle and Metallic. Astrophyllite fracture is Brittle, Metallic and Uneven.

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Hollandite Vs Astrophyllite Luster

A primary knowledge about Hollandite 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. Astrophyllite, on other hand, exhibits Greasy and Pearly luster.