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Kimrobinsonite

Collectors Summary

Lustre Matt
Hardness (Mohs) 2.75
Crystal System kubisch,

Chemism

Chem­ical formula

(Ta,Nb)(OH)3(O,CO3)

Chem­ical com­po­si­tion

Niob, Tantal, Kohlenstoff, Sauerstoff, Wasserstoff

Unit weight: 236.961499 u; Number of atoms in the formula: 8.75

Info

Empirical formula:

(Ta0.75Nb0.25)(OH)3(O0.75(CO3)0.25)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.28

3

34.29

1.0079470

3.0238410

Carbon

C

1.27

0.25

2.86

12.0107800

3.0026950

Oxygen

O

30.38

4.5

51.43

15.9994300

71.9974350

Niobium

Nb

9.80

0.25

2.86

92.9063820

23.2265955

Tantalum

Ta

57.27

0.75

8.57

180.9479100

135.7109325

Strunz 9th edi­tion incl. updates

4.FG.15

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
F: Hydroxide (ohne V oder U)
G: Hydroxide mit OH, ohne H2O; unklassifiziert
15:Kimrobinsonit-Gruppe

Lapis Clas­sifica­tion

IV/F.19-010

IV: OXIDE
F: Hydroxide und oxidische Hydrate (wasserhaltige Oxide mit Schichtstruktur)

Clas­sifica­tion by Hölzel

5.DE.900

5: CARBONATES NITRATES ARSENITES SULFITES SELENITES TELLURITES IODATES
D: Carbonates (+Anions +Water)
E: With other complex Anions

Dana 8th edi­tion

06.04.08.01

06: Hydroxides and Oxides Containing Hydroxyl
04: Hydroxides and Oxides Containing Hydroxyl containing multiple cations

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Diaphane­ity (Trans­parency)

durchscheinend

Lus­tre

Matt

RI value α / ω / n

2.23

Ri mean

2.23

2V angle

Isotropisch

Crystallography

Crystal Sys­tem

kubisch

Cell param­e­ters a (Å)

3.812

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

-

Cell param­e­ters a/b or c/a

1

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

1

Volumne (ų)

55.393

X-Ray Pow­der Diffrac­tion

3.808(100),
2.966(10),
2.696(70),
2.202(20),
1.907(30),
1.702(50),
1.555(40),
1.270(20)

XRD chart Kimrobinsonite

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

Physical Properties

Hard­ness (Mohs)

2.75

VHN (Hard­ness Vick­ers)

70 (20g)

Density (g/cm³)

6.865 (berechnet)

7.103 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Nickel & Robinson, 1985

References

Canadian Mineralogist 23 (1985), 573

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Kimrobinsonite

(Ta,Nb)(OH)3(O,CO3)

4.FG.15

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Kimrobinsonite

(Ta,Nb)(OH)3(O,CO3)

IV/F.19-010

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Kimrobinsonite

(Ta,Nb)(OH)3(O,CO3)

5.DE.900

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Lithiophorite

(Al,Li)Mn4+O2(OH)2

trigonal : 3m : R3m

06.04.01.01

Quenselite

PbMn3+O2(OH)

monoklin : 2/m : P2/a

06.04.01.02

Hydroromarchite

Sn3O2(OH)2

tetragonal : 42m : P421c

06.04.02.01

Häggite

V2O2(OH)3

monoklin : 2/m : C2/m

06.04.03.01

Hydrocalumite

Ca2Al(OH)6[Cl1-x(OH)x]·3H2O

monoklin : 2/m : P2/c

06.04.04.01

Fougèrite

Fe2+6Fe3+2(OH)16CO3·3H2O

trigonal : 3m : R3m

06.04.06.02

Janggunite

Mn5-x4+(Mn2+,Fe3+)1+xO8(OH)6

06.04.07.01

Kimrobinsonite

(Ta,Nb)(OH)3(O,CO3)

06.04.08.01

Asbolane

(Co,Ni)1-y(Mn4+O2)2-x(OH)2-2y+2x ·n H2O

06.04.09.01

Other languages

German

Kimrobinsonit

Spanish

Kimrobinsonita

French

Kimrobinsonite

English

Kimrobinsonite

IMA Number

IMA 1983-023

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

German pages

DeWikiPedia - search for: Kimrobinsonit
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Mineralogisch-Petrographisches-Institut Hamburg - search for: Kimrobinsonit

English pages

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German pages

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