Phosphophyllite | Gemopedia

Phosphophyllite gets its name from its phosphate content, and the Greek "phyllon," meaning leaf, reflecting its leaf-like perfect cleavage. This bluish, sea-green crystal is prized by collectors for its tranquil color, but is rarely faceted because of its soft, brittle nature. Yet, it represents a top prize among specimen collectors.
Colors
Colorless, Green, Blue

Phosphophyllite Classification

Common Name

Phosphophyllite

Species

Phosphophyllite

Variety

Colors

Colorless, Green, Blue

Alternate Names

Gemstone Groups

Key Separations

RI, hardness/surface condition, fluorescence, birefringence and optic character

Comments

Phosphophyllite Optical Properties

Transparency

Transparent - Translucent

Refractive Index

1.594-1.621

Birefringence

0.021

Optic Character

Biaxial

Optic Sign

Negative

Polariscope Reaction

Doubly Refractive (DR)

Fluorescence

SWUV: Inert to strong violet
LWUV: Inert

CCF Reaction

Pleochroism

Unobservable

Dispersion

Comments

Phosphophyllite Chemistry & Crystallography

Chemical Name

hydrated zinc iron phosphate

Chemical Formula

Zn2(Fe,Mn)(PO4)2.4H2O

Synthesis

Crystal System

Monoclinic

Classification

Phosphate

Nature

Natural

Crystallinity

Crystalline

Comments

Phosphophyllite Characteristic Physical Properties

Hardness

3-3.5

Streak

White

Specific Gravity

3.03-3.13 Typical:3.08

Toughness

Poor

Inclusions

Luster

Vitreous

Stability

Fracture

Uneven, Splintery

Cleavage

Perfect, in one direction, Good, in two directions

Comments

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