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Labuntsovite-Mn crystals - click for larger pic
Labuntsovite-Mn crystals
Photo by Violet Anderson
© Royal Ontario Museum

Labuntsovite-Mn crystals - click for larger pic
Labuntsovite-Mn crystals
Photo by Violet Anderson
© Royal Ontario Museum

Labuntsovite-Mn crystals - click for larger pic
Labuntsovite-Mn crystals
© Modris Baum

Labuntsovite-Mn crystals - click for larger pic
Labuntsovite-Mn crystals
© Modris Baum

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Home > Mineral Descriptions > Labuntsovite-Mn - (8 Photos)



Labuntsovite-Mn
(K,Ba,Na)(Ti,Nb)(Si,Al)2(O,OH)7 · H2O

     Labuntsovite occurs in splendid crystals from 1-10mm in length. It is the rarer mineral of an isomorphous series formed with nenadkevichite. Some beautiful labuntsovite crystals were found during the '99 collecting season. Labuntsovite-Mn has been identified from MSH, more to follow.

PHYSICAL CHARACTERISTICS:

Color is pale to deep orange.
Luster is vitreous to adamantine.
Diaphaneity is transparent.
Crystal System is monoclinic; C2/m.
Crystal Habits include singles, radiating clusters of prisms; epitactic
   overgrowth on elpidite.
Cleavage {102} is perfect.
Fracture subconchoidal.
Hardness is 6
Specific Gravity is approximately 2.87g/cm3
Streak is white.
Associated Minerals include albite, amphibole group, analcime,
   biotite, calcite, catapleiite, chlorite group, donnayite, elpidite,
   eudialyte, fluorite, galena, microcline, natrolite, polylithionite, pyrite,
   pyroxene group and pyrrhotite.
Other Properties .
Origin described in 1955 for Aleksandr Nikolaievich Labuntsov
   (1884-1963) and his wife, Ekaterina Eutikhieva Labuntsova-
   Kostyleva, Russian mineralogists.

CLASSIFICATION:

Dana System
# 60.1.3.2

Strunz Classification
# VIII/E.07-100

REFERENCES:
MinRec 10:970 (1979), MinRec 21:316 (1990), Dana 8:1235-1236 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
--

AP
--

MX
--

SS
--

MC
¤¤

HF
--

BR
¤¤

SX
--

FR
--

Legend

Labuntsovite-Mn crystals - click for larger pic
Labuntsovite-Mn crystals
© Stephan Wolfsried

Labuntsovite-Mn crystals - click for larger pic
Labuntsovite-Mn crystals
© Quintin Wight

Labuntsovite-Mn crystals - click for larger pic
Labuntsovite-Mn crystals
© Doug Merson

Labuntsovite-Mn crystals - click for larger pic
Labuntsovite-Mn crystals
© Doug Merson