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Raite (Rait)

Pictures (2 Images total)

Rait
Views (Image: 1165571929): 1362
Rait

Bildbreite: 3 mm; Fundort Mont Saint-Hilaire, Quebéc, Kanada

Copyright: Stephan Wolfsried
Contribution: Hg 2006-12-08
Locality: Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry) / Mont Saint-Hilaire / La Vallée-du-Richelieu RCM / Montérégie, Region / Québec / Kanada
Rait xx
Views (Image: 1371631845): 849
Rait xx

Pegmatit "Jubileynaja",Mt.Karnasurt,Chibiny/Kola, Rußland; Bildbreite 3 cm

Collection: Haubi
Copyright: Haubi
Contribution: Haubi 2013-06-19
Locality: Jubiläumspegmatit (Yubileinaya; Yubileinoye; Jubilejnaja) / Karnasurt, Berg / Lovozero / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland

Collectors Summary

Color Gold- bronzefarben, braun
Lustre Matt bis Glasglanz
Hardness (Mohs) 3
Solubility ++ HCl, HNO3, - H2O
Crystal System monoklin, C2/m
Morphology Radialstrahlige bis nadelige Kristalle bis 2 mm Länge und 0,02 - 0,04 mm Durchmesser

Chemism

Chem­ical formula

Na3Mn32+Ti0.254+[OH|Si4O10]2·10H2O

Chem­ical com­po­si­tion

Mangan, Natrium, Silicium, Titan, Sauerstoff, Wasserstoff

Unit weight: 1004.5910693 u; Number of atoms in the formula: 68.25

Info

Empirical formula:

Na3Mn3Ti0.25[OHSi4O10]2·10H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.21

22

32.23

1.0079470

22.1748340

Oxygen

O

50.96

32

46.89

15.9994300

511.9817600

Sodium

Na

6.87

3

4.40

22.9897702

68.9693106

Silicon

Si

22.37

8

11.72

28.0855300

224.6842400

Titanium

Ti

1.19

0.25

0.37

47.8671000

11.9667750

Manganese

Mn

16.41

3

4.40

54.9380499

164.8141497

Anal­y­sis wt%

SiO2 : 46.20, TiO2 : 3.11, Nb2O5 : 0.44, Fe2O3 : 1.86, MnO : 15.00, CaO : 1.24, Na2O : 11.24, H2O : 19.37, CO2 : 0.40 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 73)

Strunz 9th edi­tion incl. updates

9.EE.55

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
E: Einfache tetrahedrale Netze aus sechsfach-Ringen, verbunden über octahedrale Netze oder Bänder
55:Rait-Gruppe

Lapis Clas­sifica­tion

VIII/F.24-030

VIII: SILIKATE
F: Ketten- und Bandsilikate
24: Viererketten [Si4O12] 8-

Clas­sifica­tion by Hölzel

9.EG.300

9: SILICATES
E: Phyllosilicates
G: Hydrated Micas
3: With Ti,Zr,Nb,Ta

Dana 8th edi­tion

78.05.08.01

78: Unclassified Silicate Minerals
05: Unclassified silicates possible phyllosilicates

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

Gold- bronzefarben, braun

Lus­tre

Matt bis Glasglanz

max. Birefrin­gence

0.010

Birefringence chart\! Raite title=Birefringence chart Raite

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

1.540

RI value β

1.542

RI value γ / ε

1.550

Ri mean

1.544

2V angle

Biaxial (+) 53°

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell param­e­ters a (Å)

15.1

Cell param­e­ters b (Å)

17.6

Cell param­e­ters c (Å)

5.29

Cell param­e­ters a/b or c/a

0.858

Cell param­e­ters c/b

0.301

Cell param­e­ters α

90°

Cell param­e­ters β

100.5

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

1382.329

X-Ray Pow­der Diffrac­tion

11.4(100),
4.5(80),
2.939(100),
2.650(100),
2.482(60),
1.640(60),
1.575(60),
1.514(60)

XRD chart Raite

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

Morphol­ogy

Radialstrahlige bis nadelige Kristalle bis 2 mm Länge und 0,02 - 0,04 mm Durchmesser

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

3

VHN (Hard­ness Vick­ers)

83 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.39 (gemessen) 2.32 (kalkuliert )

2.413 ( ρ calc. Mineralienatlas )

Insta­bil­ity

++ HCl, HNO3, - H2O

Preface

Occurrences

Aus Alkalipegmatiten des Lovozero-Massivs, Kola Halbinsel, Russland

Asso­cia­tions

Ägirin, Mountainit, Zorit, Natrolith

Rare­ness

selten

Author (Name, Year)

Mer'kov & Bussen & Goyko & Kul'chitskaya & Men'shikov & Nedorezova, 19

Addi­tional Informa­tion

Farblich schöne Aggregate paragenetisch mit Zorit xx und Ägirin xx aus dem Jubiläumspegmatit, Lovozero. Ausgezeichnete Funde 1994 - 1995

References

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 102 (1973), 54

Other languages

German

Rait

English

Raite

French

Raite

Spanish

Raíta

Russian

Раит

CNMNC (IMA)-Number

IMA 1972-010

CNMNC symbol

Symbol

Rai

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Раит

Mineral Dealer

German pages

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

Locations with GPS information