Mesolite | Gemopedia

Mesolite is a zeolite mineral that occurs in delicate, needle-like crystal structures that radiate from its base. Prized by collectors for its striking crystal formation, mesolite is typically white or colorless, but occasionally light yellow in color. Large specimens are very rare, and faceted gems are almost non-existent.
Colors
Colorless, White, Gray, Pale Yellow

Mesolite Classification

Common Name

Mesolite

Species

Mesolite

Variety

Colors

Colorless, White, Gray, Pale Yellow

Alternate Names

Gemstone Groups

Key Separations

Mesolite is currently only found as mineral specimens.

Comments

Sometimes pyroelectric: development of opposite charges at the ends of the crystal due to change in temperature. Sometimes piezoelectric: development of opposite charges at the ends of the crystal when placed under stress.

Mesolite Optical Properties

Transparency

Transparent - Opaque

Refractive Index

1.504-1.508

Birefringence

0.001

Optic Character

Biaxial

Optic Sign

Positive

Polariscope Reaction

Doubly Refractive (DR)

Fluorescence

SWUV: Inert
LWUV: Inert

CCF Reaction

Pleochroism

Unobservable

Dispersion

Strength: strong fire

Comments

Mesolite Chemistry & Crystallography

Chemical Name

Chemical Formula

Na2Ca2Si9Al6O30.8H2O

Synthesis

Crystal System

Orthorhombic

Classification

Silicate

Nature

Natural

Crystallinity

Crystalline

Comments

Mesolite Characteristic Physical Properties

Hardness

5-5.5

Streak

White

Specific Gravity

2.26-2.4 Typical:2.26

Toughness

Inclusions

Mesolite has clusters of radiating needle like crystals and is silky in appearance if fibrous.

Luster

Vitreous

Stability

Fracture

Uneven

Cleavage

Perfect, in two directions

Comments

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