Home > Mineral Descriptions > Zircophyllite



Zircophyllite
K2(Na,Ca)(Mn,Fe2+)7(Zr,Nb)2Si8O26(OH)4F

     Zircophyllite is another astrophyllite group mineral recently identified from Mont Saint-Hilaire. It is brittle and displays pleochroism; X and Y are dark yellow and Z is brown.

PHYSICAL CHARACTERISTICS:

Color is red-brown.
Luster is vitreous to adamantine.
Diaphaneity: translucent to opaque.
Crystal System is triclinic; P1.
Crystal Habits include fibrous rims.
Cleavage {001} is perfect.
Fracture is uneven to splintery.
Hardness is 4 - 4½.
Specific Gravity is approximately 3.34 g/cm3
Streak is light brown.
Associated Minerals include aegirine, albite, ancylite-(Ce) group, birnessite, kupletskite and microcline.
Distinguishing Features brittle.
Origin: Named in 1972 for the ZIRCOnium in the composition, and the Greek for "leaf", in reference to the habit.

CLASSIFICATION:

Dana System
# 69.1.1.5

Strunz Classification
# VIII/G.12-70

REFERENCES:
Dana 8:1384 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
¤¤

AP
¤¤

MX

SS
--

MC
--

HF
--

BR
--

SX
--

FR
--

Legend