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Cafetite

Pictures (3 Images total)

Cafetit
Views (Image: 1360587291): 617
Cafetit

gelblicher Cafetit, Bildbreite: 2 mm, Fundort: Rasvumchorr, Chibiny-Massiv, Kola-Halbinsel, Russland

Copyright: Luigi Chiappino
Contribution: thdun5 2013-02-11
Locality: Rasvumchorr / Chibiny (Khibiny) / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland
Cafetit
Views (Image: 1360587325): 492
Cafetit

gelblicher Cafetit, Bildbreite: 2 mm, Fundort: Rasvumchorr, Chibiny-Massiv, Kola-Halbinsel, Russland

Copyright: Luigi Chiappino
Contribution: thdun5 2013-02-11
Locality: Rasvumchorr / Chibiny (Khibiny) / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland
Perowskit, Cafetit
Views (Image: 1360799342): 1047
Perowskit, Cafetit

Perowskit (schwarz) mit Cafetit (gelb-orange), Bildbreite: ca. 3,5 cm, Fundort: Afrikanda, Kola-Halbinsel, Murmansk, Russland

Copyright: Dan Weinrich
Contribution: thdun5 2013-02-14
Locality: Afrikanda / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland

Collectors Summary

Color blassgelb
Streak color weiß
Hardness (Mohs) 4.00 - 5.00
Solubility +++ kochende H2SO4, - HCl, HNO3
Crystal System monoklin, P21/n

Chemism

Chem­ical formula

CaTi2O5 ·H2O

Chem­ical com­po­si­tion

Calcium, Titan, Sauerstoff, Wasserstoff

Unit weight: 233.825074 u; Number of atoms in the formula: 11

Info

Empirical formula:

CaTi2O5·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.86

2

18.18

1.0079470

2.0158940

Oxygen

O

41.05

6

54.55

15.9994300

95.9965800

Calcium

Ca

17.14

1

9.09

40.0784000

40.0784000

Titanium

Ti

40.94

2

18.18

47.8671000

95.7342000

Anal­y­sis wt%

Nb2O5 : 2.14, TiO2 : 64.83, FeO : 0.97, CaO : 19.17, Na2O : 1.63, H2O : 11.00 (Ref: American Mineralogist 2003)

Strunz 9th edi­tion incl. updates

4.FL.75

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
F: Hydroxide (ohne V oder U)
L: Hydroxide mit H2O ± (OH); Lagen kantenverknüpfter Oktaeder
75:Cafetit-Gruppe

Lapis Clas­sifica­tion

IV/D.20-015

IV: OXIDE
D: Oxide mit Verhältnis Metall : Sauerstoff = 1:2 (MO2 und verwandte Verbindungen)

Clas­sifica­tion by Hölzel

4.CO.120

4: OXIDES
C: R2O3 Sesquioxides
O: Pseudopyrochlore-Group

Dana 8th edi­tion

08.07.03.01

08: Multiple Oxides with Nb, Ta, and Ti
07: Multiple Oxides with Nb, Ta, and Ti

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

blassgelb

Streak color

weiß

max. Birefrin­gence

0.16

Birefringence chart\! Cafetite title=Birefringence chart Cafetite

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

1.95

RI value β

2.08

RI value γ / ε

2.11

Ri mean

2.047

2V angle

Biaxial (-) 38°

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/n

Cell param­e­ters a (Å)

4.944

Cell param­e­ters b (Å)

12.109

Cell param­e­ters c (Å)

15.911

Cell param­e­ters a/b or c/a

0.408

Cell param­e­ters c/b

1.314

Cell param­e­ters α

90°

Cell param­e­ters β

98.93

Cell param­e­ters γ

90°

Z

8

Volumne (ų)

940.996

X-Ray Pow­der Diffrac­tion

7.86(100),
3.27(80),
2.79(30),
2.63(40),
2.562(80),
2.108(40),
1.914(70),
1.573(40)

XRD chart Cafetite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

4.00 - 5.00

VHN (Hard­ness Vick­ers)

280 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.28 (gemessen)

3.301 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ kochende H2SO4, - HCl, HNO3

Preface

Author (Name, Year)

Kukharenko & Kondrat'eva & Kovyazina, 1959

References

American Mineralogist 88 (2003), 424

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

Cafetite

CaTi2O5 ·H2O

monoklin : 2/m : P21/n

4.FL.75

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

Kassite

CaTi2O4(OH)2

monoklin : 2/m : P21/a

IV/D.20-010

Cafetite

CaTi2O5 ·H2O

monoklin : 2/m : P21/n

IV/D.20-015

Kobeite-(Y)

(Y,U)(Ti,Nb)2(O,OH)6

IV/D.20-020

Lucasite-(Ce)

(Ce,La)Ti2(O,OH)6

monoklin : 2/m : I2/a

IV/D.20-030

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

Zirkelite

(Ti,Ca,Zr)O2-x

4.CO.100

Kassite

CaTi2O4(OH)2

monoklin : 2/m : P21/a

4.CO.110

Cafetite

CaTi2O5 ·H2O

monoklin : 2/m : P21/n

4.CO.120

'Uhligite'

Ca3(Ti,Al,Zr)9O20

4.CO.130

'Zirconolite'

CaZrTi2O7

4.CO.140

Zirconolite-2M

(Ca,Y)Zr(Ti,Mg,Al)2O7

monoklin : 2/m : C2/c

4.CO.142

'Zirconolite-3O' (Pol.v. Zirconolite-2M)

(Ca,Fe,Y,Th)2Fe(Ti,Nb)3Zr2O14

orthorhombisch : mmm : Acam

4.CO.144

'Zirconolite-3T' (Pol.v. Zirconolite-2M)

CaZrTi2O7

trigonal : 32 : P3121

4.CO.146

Tazheranite

(Zr,Ti,Ca)O2

kubisch : m3m, 43m : Fm3m, P43m

4.CO.160

Calzirtite

Ca2Zr5Ti2O16

orthorhombisch : mmm : Pbca

4.CO.180

Hiärneite

Ca2(Zr,Ti)5(Sb5+,Mn3+)2O16

tetragonal : 4/mmm : I41/acd

4.CO.185

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

Cafetite

CaTi2O5 ·H2O

monoklin : 2/m : P21/n

08.07.03.01

Hiärneite

Ca2(Zr,Ti)5(Sb5+,Mn3+)2O16

tetragonal : 4/mmm : I41/acd

08.07.04.02

Simpsonite

Al4Ta3O13(OH)

trigonal : 3 : P3

08.07.05.01

Rankamaite

(Na,K)3(Ta,Nb,Al)11(O,OH)31

orthorhombisch : 222 : C222

08.07.06.01

Sosedkoite

(K,Na)5Al2(Ta,Nb)22O60

orthorhombisch : mmm : Cmmm

08.07.06.02

Lithiotantite

Li(Ta,Nb)3O8

monoklin : 2/m : P21/c

08.07.07.01

Jeppeite

(K,Ba)2(Ti,Fe3+)6O13

monoklin : 2/m : C2/m

08.07.09.01

CNMNC symbol

Symbol

Cft

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

German pages

DeWikiPedia - search for: Cafetit
Google-Bilder-Suche - search for: Cafetit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Cafetit

English pages

Mindat - search for: Cafetite
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Handbook-of-Mineralogy - search for: Cafetite
RRUFF - Raman, XRD and other mineral data - search for: Cafetite
RRUFF - References and PDF downloads - search for: Cafetite
American-Mineralogist-Crystal-Structure-Database - search for: Cafetite
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Russian pages

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German pages

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