Malinkoite Mineral Data

Malinkoite Mineral Data

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General Malinkoite Information

Chemical Formula:

NaBSiO4

Composition:

Molecular Weight = 125.88 gm

Sodium 18.26 % Na 24.62 % Na₂O

Silicon 22.31 % Si 47.73 % SiO₂

Boron 8.59 % B 27.65 % B₂O₃

Oxygen 50.84 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaBSiO₄

Environment:

In a cavity in the ussingite-rich core of a hyperagpaitic pegmatite. Similar to kalsilite and beryllonite

IMA Status:

Approved IMA 2000 (Dana # Added)

Locality:

Mt. Karnasurt and Mt. Alluaiv, Lovozero Massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for Svetlana V. Malinko(1927-), Russian mineralogist who specializes in B minerals.

Synonym:

IMA2000-009

Malinkoite Image

Images:

Malinkoite

Comments: White to clear glassy mico crystals of malinkoite to less than 0.75mm deep in a vug.
Location: Mont St. Hilaire, Rouville Co., Quebec, Canada. Scale: 2 x 1.5 x 1.5 cm.
© Tom Loomis / Dakota Matrix

Malinkoite Crystallography

Axial Ratios:

a:c = 1:0.5541

Cell Dimensions:

a = 13.8964, c = 7.7001, Z = 18; V = 1,287.75 Den(Calc)= 2.92

Crystal System:

Hexagonal - PyramidalH-M Symbol (6) Space Group: P 6₃

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.78(1)(032), 2.216(0.9)(331), 1.721(0.7)(333),2.32(0.7)(330), 3.61(0.6)(012,031), 3.86(0.6)(002), 1.928(0.5)(250),

Crystal Structure:

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drag2 - RMB Resize/Rotate
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Sokolova E V , Hawthorne F C , Khomyakov A P , The Canadian Mineralogist , 39 (2001) p.159-169, The crystal chemistry of malinkoite, NaBSiO4, and lisitsynite, KBSi2O6,, from the Khibina-Lovozero complex, Kola Peninsula, Russia, Locality: Khibina-Lovozero complex, Kola Peninsula, Russia

Physical Properties of Malinkoite

Cleavage:

[001] Distinct, [h00] Distinct

Color:

White, Rosy cream, Pale pink, Greenish blue.

Density:

2.9

Diaphaniety:

Transparent to turbid

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Habit:

Rosette - Bundled tabular aggregates resembling rose flower petals.

Hardness:

5 - Apatite

Luminescence:

Fluorescent, Short UV=dull pinkish lilac, Long UV=bright greenish yellow.

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Malinkoite

Gladstone-Dale:

CI meas= 0.016 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.023 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2009,KPDmeas= 0.2022,KC= 0.2055

Optical Data:

Uniaxial (-), e=1.582, w=1.591, bire=0.0090.

Calculated Properties of Malinkoite

Electron Density:

r_electron=2.86 gm/cc
note: r_Malinkoite=2.90 gm/cc.

Fermion Index

Fermion Index = 0.02775
Boson Index = 0.97225

Photoelectric:

PE_Malinkoite= 1.24 barns/electron
U=PE_Malinkoite x r_electron= 3.54 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Malinkoite is Not Radioactive

Malinkoite Classification

Dana Class:

76.4.2.1 (76)Tectosilicate Al-Si Framework

(76.4)with B-Si frameworks

(76.4.2)Dana Group

76.4.2.1 Malinkoite ! NaBSiO4 P 6₃ 6

Strunz Class:

VIII/J.02-70 VIII - Silicates

VIII/J - Tectosilicates (network) without anions unfamiliar to the tetraheders

VIII/J.02 - Nepheline - Yoshiokaite series

VIII/J.02-10 Nepheline (Na,K)AlSiO4 P 6₃ 6

VIII/J.02-20 Kalsilite KAlSiO4 P 3₁c 3m

VIII/J.02-25 Megakalsilite! KAlSiO4 P 6₃ 6

VIII/J.02-30 Trikalsilite (K,Na)AlSiO4 P 6₃ 6

VIII/J.02-40 Panunzite (K,Na)AlSiO4 P 6₃ 6

VIII/J.02-50 Kaliophilite KAlSiO4 P 6₃22 6 2 2

VIII/J.02-60 Yoshiokaite (Ca8-(x/2)[](x/2)Al16-xSixO32) P 3 3

VIII/J.02-70 Malinkoite NaBSiO4 P 6₃ 6

Other Malinkoite Information

References:

NAME( AmMin, Vol 87, p 181) PHYS. PROP.(AmMin, Vol 87, p 181) OPTIC PROP.(AmMin, Vol 87, p 181)

See Also:

Links to other databases for Malinkoite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Print or Cut-and-Paste your Malinkoite Specimen Label here :

Malinkoite

NaBSiO4
Dana No: 76.4.2.1 Strunz No: VIII/J.02-70
Locality:

Notes: