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Calcioburbankite crystals - click for larger pic
Calcioburbankite crystal
Photo by Doug Merson
© Doug Merson

Calcioburbankite crystals - click for larger pic
Calcioburbankite crystals
Modris Baum photo
© Modris Baum

Calcioburbankite crystals - click for larger pic
Calcioburbankite crystals
Photo by Modris Baum
© Modris Baum

Calcioburbankite crystals - click for larger pic
Calcioburbankite crystals
Photo by Jason B. Smith
© Jason B. Smith

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Home > Mineral Descriptions > Calcioburbankite (TL)



Calcioburbankite (Type Locality)
Na3(Ca,REE,Sr)3(CO3)5)

     Calcioburbankite's holotype specimen was collected in the late 60's, however the exact locality of the specimen within the quarry remains unknown. The associated species suggest that the mineral may have formed in a vent. Many species are found in this mode of occurrence. Following the characterization of the mineral La-enriched calcioburbankite was encountered in a vug in a fragment of marble xenolith. These xenoliths are unique to the aureole surrounding the hornfels unit.

PHYSICAL CHARACTERISTICS:

Color is deep orange, silky white exterior and light pink interior.
Luster is vitreous.
Diaphaneity is translucent.
Crystal System is hexagonal; P63mmc.
Crystal Habits include equant crystals less than 0.5mm with fibrous
   terminations with a silky white exterior and light pink, translucent
   interior.
Cleavage: {100} is indistinct.
Fracture is conchoidal.
Hardness is 3 to 4.
Specific Gravity is approximately 3.45 g/cm3.
Streak is white.
Associated Minerals include ancylite-(Ce), calcite, chlorite group,
   donnayite-(Y), fluoroapatite, natrolite, pyrite, rhodochrosite and rutile.
Distinguishing Features: Brittle. Non Fluorescent.
Origin: Named in 1995 for its calcium dominant chemistry in the
   burbankite group.

CLASSIFICATION:

Dana System
# 14.4.4.3

Strunz Classification
# V/B.5-9

REFERENCES:
CanMin 33:1231-1235 (1995), Dana 8:460 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
¤¤

AP
--

MX
¤¤

SS
--

MC
--

HF
--

BR
--

SX
--

FR
--

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