Sections
Thumbnails

Carletonite crystals - click for larger pic
Magnificent carletonite crystals
© Gilles Haineault

Carletonite crystals - click for larger pic
Carletonite crystals
© Doug Merson

Carletonite crystals - click for larger pic
Carletonite crystals
© Stephan Wolfsried

Carletonite crystals - click for larger pic
Carletonite crystals
3 x 2 cm
© Gilles Haineault

Search this site

Powered by FreeFind

Home > Mineral Descriptions > Carletonite (TL) - (8 Photos)



Carletonite (Type Locality)
K,Na4Ca4Si8(CO3)4(OH,F) · H2O

     Mont Saint-Hilaire is the type and only locality for Carletonite. Color-zoning is one of the characteristics of carletonite and is very common, with a gradual or very sharp and irregular transition. Phantoms occur in many of the smaller transparent blue crystals, with a darker blue core and a colorless to pale blue outer zone.


Example of pleochroism on Carletonite
© Dr Blaise Canzian

PHYSICAL CHARACTERISTICS:

Color varies from pale to deep blue, pink to colorless to white.
Luster is dull to vitreous to silky.
Diaphaneity is transparent to translucent.
Crystal System is tetragonal, P4/mbm.
Crystal Habits include short to long tetragonal prisms, crystalline
   masses.
Cleavage: {001} is perfect and {110} is distinct.
Fracture is conchoidal.
Hardness is 4 to 4.5
Specific Gravity is approximately 2.45 g/cm3.
Streak is white.
Associated Minerals include chkalovite, erdite, kogarkoite,
   makatite, natrophosphate, rasvumite, revdite, sazhinite-(Ce),
   sidorenkite, thalcusite, tugtupite, vitusite-(Ce).
Distinguishing Features: Crystal habit, color-zoning in smaller
   crystals and etched surfaces.
Origin: Named in 1971 for Carleton University, Ottawa, Canada;
   where it was first recognized.

CLASSIFICATION:

Dana System
# 72.3.1.4

Strunz Classification
# VIII/H.7-10

REFERENCES:
AmMin 56:1855-1866 (1971), AmMin 57:765-778 (1972),
MinRec 21:301-302 (1990), Dana 8:1528 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
--

AP
--

MX
¤¤

SS
--

MC
--

HF
--

BR
¤¤

SX
--

FR
--

Legend

Carletonite crystal - click for larger pic
Carletonite crystal
Photo by R. Lavinsky
© www.irocks.com

Carletonite crystal - click for larger pic
Carletonite crystal
Photo by R. Lavinsky
© www.irocks.com