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Manganokukisvumite (Manganokukisvumit)

Collectors Summary

Hardness (Mohs) 5.75
Cleavages keine
Fracture splittrig

Chemism

Chemical formula

Na6MnTi4Si8O28·4(H2O)

Chemical composition

Mangan, Natrium, Silicium, Titan, Sauerstoff, Wasserstoff

Unit weight: 1129.0746471 u; Number of atoms in the formula: 59

Info

Empirical formula:

Na6MnTi4Si8O28·4(H2O)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.71

8

13.56

1.0079470

8.0635760
Oxygen

O

45.35

32

54.24

15.9994300

511.9817600
Sodium

Na

12.22

6

10.17

22.9897702

137.9386212
Silicon

Si

19.90

8

13.56

28.0855300

224.6842400
Titanium

Ti

16.96

4

6.78

47.8671000

191.4684000
Manganese

Mn

4.87

1

1.69

54.9380499

54.9380499

Analysis wt%

SiO2 : 41.74, Nb2O5 : 0.68, TiO2 : 26.90, FeO : 0.57, MnO : 5.48, Na2O : 15.61, H2O : 6.25 (Ref: Canadian Mineralogist 2004)

Strunz 9th edition incl. updates

9.DB.20

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
B: Ketten- und Bandsilikate mit 2 periodischen Ketten SiO6; mit zusätzlich O, OH, H2O Pyroxen-verwandte Mineralien
20:Kukisvumit-Gruppe

Lapis Classification

VIII/F.03-058

VIII: SILIKATE
F: Ketten- und Bandsilikate
3: Zweierketten [Si2O6] 4-

Classification by Hölzel

9.DE.365

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
E: Orthorhombic Pyroxenes and Pyroxenoides
3: Lorenzenite-Group

Dana 8th edition

65.01.06.04

65: Inosilicate Minerals
01: Inosilicates Inosilicate Single-Width Unbranched Chains, W=1 with chains P=2
06: Lorenzenite group

Optical Properties

max. Birefringence

0.135
Birefringence chart\! Manganokukisvumite title=Birefringence chart Manganokukisvumite

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

1.657

RI value β

1.744

RI value γ / ε

1.792

Ri mean

1.731

2V angle

Biaxial (-) 70°

Crystallography

Cell parameters a (Å)

29.05

Cell parameters b (Å)

8.612

Cell parameters c (Å)

5.220

Cell parameters a/b or c/a

3.373

Cell parameters c/b

0.606

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volume (ų)

1305.9

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.75

VHN (Hardness Vickers)

630 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.86 (gemessen)

2.871 ( ρ calc. Mineralienatlas )

Cleavages

keine

Fracture

splittrig

Tenacity

schneidbar, leicht flexibel

(Co-)Type locality

(Co-)Type locality

Kanada/Québec, Provinz/Montérégie, Region/La Vallée-du-Richelieu RCM/Mont Saint-Hilaire

Other languages

German

Manganokukisvumit

Spanish

Manganokukisvumita

French

Manganokukisvumite

English

Manganokukisvumite

Russian

Манганокукисвумит

Simplified Chinese

羟硅锰钛钠石

Traditional Chinese

羥矽錳鈦鈉石

Alternative Name

German

Mangano-Kukisvumit

Unnamed (MSH UK-112)

CNMNC (IMA)-Number

IMA 2002-029

CNMNC symbol

Symbol

Mkki

Locations with GPS information

IDs

GUSID (Global unique identifier short form) bfhpjD7MyEmNUew5gDjIoA
GUID (Global unique identifier) 8C69F86D-CC3E-49C8-8D51-EC398038C8A0
Database ID 2365