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Mineralpedia Details for Barytolamprophyllite

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Barytolamprophyllite

Barytolamprophyllite

Named for the relationship to lamporphyllite and for the barium in the composition. Barytolamprophyllite is a rare mineral that occurs in ijolite in its Russian localities. Additional localities include in Germany, the United States, Greenland, and Canada. Assocaited minerals include aegirine, nepheline, K-feldspar, cancrinite, apatite, amphibolites, eudialyte, natrolite, and pectolite.


Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/barytolamprophyllite.pdf

Formula
Na3(BaK)Ti3(Si2O7)2O2(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Flakes, Stellate 
Cleavage
Perfect, Good, Poor 
Luster
Vitreous (Glassy) 
Color
golden brown, dark brown 
Streak
light brown 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
2-3 
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Barytolamprophyllite from Palitra pegmatite, Mt. Kedykverpakhk, Lovozero Massif, Kola Peninsula, Russia

Barytolamprophyllite
            from Palitra pegmatite, Mt. Kedykverpakhk, Lovozero Massif, Kola Peninsula, Russia

Amber-brown, platy, radial crystals to 1cm across. Identified by Dr. Igor Pekov.

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Barytolamprophyllite from Yukspor Mt, Khibiny Massif, Kola Peninsula, Russia

Barytolamprophyllite
            from Yukspor Mt, Khibiny Massif, Kola Peninsula, Russia

Flashy, vitreous cleaveable mass.

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