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Bornemanite (Bornemanit)

Pictures (1 Images total)

Strohgelbe Aggregate von Bornemanit auf Natrolith
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Strohgelbe Aggregate von Bornemanit auf Natrolith

Partie: 2 x 1,4 cm; Fundort: Jubiläumsgang, Mount Karnasurt, Lovozero-Massiv, Kola-Halbinsel, Russland

Copyright: McSchuerf
Contribution: Mineralienatlas 2004-04-07
Locality: Jubiläumspegmatit (Yubileinaya; Yubileinoye; Jubilejnaja) / Karnasurt, Berg / Lovozero / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland

Collectors Summary

Color blassgelb bis strohgelb
Streak color weiß
Lustre Perlmuttglanz
Hardness (Mohs) 3.5 - 4
Cleavages vollkommen {001}
Solubility +++ Säuren, kochendes H2O
Crystal System triklin, P1
Morphology blättrig-schuppige Aggregate bis über 2 cm Durchmesser; auch Pseudomorphosen nach Lomonosovit v. Shkatulka Pegmatit, Lovozero-Massiv, Kola-Halbinsel, Russland

Chemism

Chem­ical formula

Na6BaTi2Nb(Si2O7)2(PO4)O2(OH)F

Chem­ical com­po­si­tion

Barium, Natrium, Niob, Silicium, Titan, Fluor, Phosphor, Sauerstoff, Wasserstoff

Unit weight: 963.21716465 u; Number of atoms in the formula: 38

Info

Empirical formula:

Na6BaTi2Nb(Si2O7)2(PO4)O2(OH)F

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.10

1

2.63

1.0079470

1.0079470

Oxygen

O

34.88

21

55.26

15.9994300

335.9880300

Fluorine

F

1.97

1

2.63

18.9984033

18.9984033

Sodium

Na

14.32

6

15.79

22.9897702

137.9386212

Silicon

Si

11.66

4

10.53

28.0855300

112.3421200

Phosphorus

P

3.22

1

2.63

30.9737612

30.9737612

Titanium

Ti

9.94

2

5.26

47.8671000

95.7342000

Niobium

Nb

9.65

1

2.63

92.9063820

92.9063820

Barium

Ba

14.26

1

2.63

137.3277000

137.3277000

Anal­y­sis wt%

SiO2 : 25.76, P2O5 : 7.22, Nb2O5 : 11.18, TiO2 : 17.29, MnO : 2.17, BaO : 11.76, SrO : 0.63, Na2O : 19.84, K2O : 0.62, H2O : 0.70, F : 2.54 (Ref: Mineralogical Magazine 2008)

Strunz 9th edi­tion incl. updates

9.BE.50

9: Silikate (Germanate)
B: Gruppensilikate (Sorosilikate)
E: Si2O7 Gruppen mit zusätzlichen Anionen; Kationen in oktahedraler [6] und größerer Koordination
50:Bornemanit-Gruppe

Lapis Clas­sifica­tion

VIII/C.14-060

VIII: SILIKATE
C: Gruppensilikate
14: Gruppensilikate [Si2O7] 6-, mit tetraederfremden Anionen (O,OH,F); Reihe Murmanit-Lomonosovit

Clas­sifica­tion by Hölzel

9.BH.310

9: SILICATES
B: Sorosilicates
H: Rosenbuschite-Lamprophyllite-Group

Hey's Chem­ical Index of Min­er­als

17.06.08

17: Silicates Containing other Anions
06: Silicates with phosphate

Dana 8th edi­tion

56.04.02.01

56: Sorosilicates Sorosilicate Si2O7 Groups and O, OH, F. and H2O
04: Sorosilicates Sorosilicate Si2O7 Groups and O, OH, F. and H2O with [Si2O7] with phosphate, water
02: Bornemanite Group

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

blassgelb bis strohgelb

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent, durchscheinend

Lus­tre

Perlmuttglanz

max. Birefrin­gence

0.036

Birefringence chart\! Bornemanite title=Birefringence chart Bornemanite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.682 - 1.683

RI value β

1.687 - 1.695

RI value γ / ε

1.718 - 1.720

Ri mean

1.698

2V angle

Biaxial (+) 40° (gemssen) 66° (berechnet)

Ori­enta­tion

X = c; Y = b; Z = a

Absorp­tion

Z > X = Y

Pleochro­ism

Schwach; X = Y = farblos, Z = bräunlich

Optical Data Luminescence

Lumi­nes­cence

keine Fluoreszenz bekannt

Crystallography

Crystal Sys­tem

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell param­e­ters a (Å)

5.4587(3)

Cell param­e­ters b (Å)

7.1421(5)

Cell param­e­ters c (Å)

24.528(2)

Cell param­e­ters a/b or c/a

0.764

Cell param­e­ters c/b

3.434

Cell param­e­ters α

96.790(1)°

Cell param­e­ters β

96.927(1)°

Cell param­e­ters γ

90.326(1)°

Z

2

Volumne (ų)

942.432

X-Ray Pow­der Diffrac­tion

23.8(100),
8.02(90),
3.447(60),
3.016(90),
2.705(20),
2.683(40),
2.410(20)

XRD chart Bornemanite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Morphol­ogy

blättrig-schuppige Aggregate bis über 2 cm Durchmesser; auch Pseudomorphosen nach Lomonosovit v. Shkatulka Pegmatit, Lovozero-Massiv, Kola-Halbinsel, Russland

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

3.5 - 4

VHN (Hard­ness Vick­ers)

257 - 283 (100g)

Density (g/cm³)

3.47 - 3.50 (gemessen) 3.342 (berechnet)

3.394 ( ρ calc. Mineralienatlas )

Cleav­ages

vollkommen {001}

Tenac­ity

spröde, Fasern sind flexibel

Radioac­tiv­ity

nicht bekannt

Insta­bil­ity

+++ Säuren, kochendes H2O

Chem­ical Prop­er­ties and Tests

chemisch und durch Röntgenanalyse

(Co-)Type locality

(Co-)Type locality

Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Lovozero/Karnasurt, Berg/Jubiläumspegmatit (Yubileinaya; Yubileinoye; Jubilejnaja)

Type mate­r­ial

Mining Institute, St. Petersburg, Russland;

Geology Museum, Kola Branch, Academy of Sciences, Apatity, Russland

A.E. Fersman Mineralogical Museum, Academy of Sciences, Moskau, Russland

National School of Mines, Paris, Frankreich

The Natural History Museum, London, England

National Museum of Natural History, Washington, D.C., USA

Col­lec­tion number of type mate­r­ial

1057/3 (St. Petersburg); 3274, 3308 (Apatity); 75318 (Moskau); 1994,4 (London); 143813 (Washington)

Preface

Occurrences

in Alkalipegmatiten, auf Spaltflächen von Lomonosovit in Natrolith

Asso­cia­tions

Lomonosovit, Natrolith

Rare­ness

sehr selten

Name from

Zu Ehren von Irina Dmitrievna Borneman-Starynkevich (1891 {1988), russische Mineralogin, spezialisiert auf Khibiny und Lovozero Mineralien; Institut für Geologie der Erzlagerstätten, Petrologie, Mineralogie, Geochemie und Lagerstätten, Moskau, Russland

Author (Name, Year)

Men'shikov & Bussen & Goidko & Zabavnikova & Mer'kov & Khomyakov, 1975

Rel­evance, Usage

nur zu Sammlerzwecken

Col­lector informa­tion

schwer zu bekommendes Systematikmineral

References

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 104 (1975), 322

Canadian Mineralogist 39 (2001), 1665

Mineralogical Magazine 71 (2007), 593

Other languages

German

Bornemanit

Spanish

Bornemanita

French

Bornemanite

English

Bornemanite

Russian

Борнеманит

Traditional Chinese

磷矽鈮鈉鋇石

Simplified Chinese

磷硅铌钠钡石

CNMNC (IMA)-Number

IMA 1973-053

CNMNC symbol

Symbol

Bma

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Bornemanit
Google-Bilder-Suche - search for: Bornemanit
Mineralienatlas.de (Forum) - search for: Bornemanit

English pages

Mindat - search for: Bornemanite
Webmineral - search for:Bornemanite
Handbook-of-Mineralogy - search for: Bornemanite
RRUFF - Raman, XRD and other mineral data - search for: Bornemanite
RRUFF - References and PDF downloads - search for: Bornemanite
American-Mineralogist-Crystal-Structure-Database - search for: Bornemanite
Strahlen.org - search for: Bornemanite

Russian pages

Webmineral.ru - search for: Борнеманит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Bornemanit
Crystal-Treasure.com - search for: Bornemanit
Bosse - search for: Bornemanit
Edelsteine Neuburg - Gundolf Fischer - search for: Bornemanit