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Ishikawaite

Pictures (2 Images total)

Ishikawait
Views (Image: 1605608573): 190
Ishikawait

Ishikawait; Little Patsy Pegmatit,Colorado; BB: 5 mm

Collection: Rockhounder
Copyright: Rockhounder
Contribution: Rockhounder 2020-11-17
Locality: Little Patsy Pegmatite / South Platte District / Jefferson Co. / Colorado / USA
Ishikiwait-Kristall epitaktisch auf Ferrocolumbit
Views (Image: 1243762194): 1409
Ishikiwait-Kristall epitaktisch auf Ferrocolumbit

Bildbreite: 30 mm; Fundort: Grube Nr. 298, Naturschutzgebiet Ilmen, Ilmen-Gebirge, Tscheljabinsk, Ural, Russland

Copyright: Pavel M. Kartashov
Contribution: slugslayer 2009-05-31
Locality: Grube Nr. 298 / Naturschutzgebiet Ilmen / Ilmen-Gebirge / Tscheljabinsk, Oblast / Ural, Föderationskreis / Russland

Collectors Summary

Color schwarz
Streak color dunkelbraun
Hardness (Mohs) 5.5
Crystal System monoklin,

Chemism

Chem­ical formula

(U,Fe,Y)NbO4

Chem­ical com­po­si­tion

Eisen, Niob, Yttrium, Sauerstoff, Uran

Unit weight: 325.365595 u; Number of atoms in the formula: 6

Info

Empirical formula:

(U0.6Fe0.3Y0.1)NbO4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

19.67

4

66.67

15.9994300

63.9977200

Iron

Fe

5.15

0.3

5.00

55.8452000

16.7535600

Yttrium

Y

2.73

0.1

1.67

88.9058520

8.8905852

Niobium

Nb

28.55

1

16.67

92.9063820

92.9063820

Uranium

U

43.89

0.6

10.00

238.0289130

142.8173478

Strunz 9th edi­tion incl. updates

4.DB.25

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
D: Metall: Sauerstoff = 1:2 und vergleichbare
B: Mit mittelgroßen [Kationen]: Ketten kantenverknüpfter Oktaeder
25:Samarskit-Gruppe

Lapis Clas­sifica­tion

IV/D.19-070

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

Clas­sifica­tion by Hölzel

4.DH.170

4: OXIDES
D: Dioxides
H: Wolframite-Group

Dana 8th edi­tion

08.01.04.01

08: Multiple Oxides with Nb, Ta, and Ti
01: Multiple Oxides with Nb, Ta, and Ti where A BO4

IMA sta­tus

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

schwarz

Streak color

dunkelbraun

Diaphane­ity (Trans­parency)

opak

Crystallography

Crystal Sys­tem

monoklin

Cell param­e­ters a (Å)

5.652

Cell param­e­ters b (Å)

9.934

Cell param­e­ters c (Å)

5.243

Cell param­e­ters a/b or c/a

0.569

Cell param­e­ters c/b

0.528

Cell param­e­ters α

90°

Cell param­e­ters β

93.95

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

293.679

X-Ray Pow­der Diffrac­tion

3.73(40),
3.64(20),
3.114(100),
2.968(100),
2.826(30),
2.615(30),
2.479(30),
1.856(30)

XRD chart Ishikawaite

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

Crystals 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

5.5

VHN (Hard­ness Vick­ers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

6.3 (gemessen)

7.358 ( ρ calc. Mineralienatlas )

Radioac­tiv­ity

ja

Preface

Name from

der Fundstelle Ishikawa

Author (Name, Year)

Kimura, 1922

Safety Instructions

Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness.




Safety classes: Ionizing radiation: Radioaktiv

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 271

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

Ixiolite

(Ta,Mn,Nb)O2

orthorhombisch : mmm : Pbcn

4.DB.25

Srilankite

(Ti,Zr)O2

orthorhombisch : mmm : Pbcn

4.DB.25

Ishikawaite

(U,Fe,Y)NbO4

4.DB.25

Rossovskyite

(Fe3+,Ta)(Nb,Ti)O4

monoklin : 2/m : P2/c

4.DB.25

Nioboheftetjernite

ScNbO4

monoklin : 2/m : P2/c

4.DB.25

'Písekite-(Y)'

(Y,As,Ca,Fe,U)(Nb,Ti,Ta)O4

monoklin : 2/m : P21/n

4.DB.25

Samarskite-(Y)

YFe3+Nb2O8

orthorhombisch : mmm : Pbcn

4.DB.25

Iwashiroite-(Y)

YTaO4

monoklin : 2/m : P2/a

4.DB.25

Samarskite-(Yb)

YbNbO4

monoklin : 2/m : P2/c

4.DB.25

Calciosamarskite

(Ca,Fe,Y)(Nb,Ta,Ti)O4

4.DB.25

'Yttrocolumbite-(Y)'

(Y,U,Fe2+)(Nb,Ta)O4

4.DB.25

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

Polycrase-(Y)

(Y,Ca,Ce,U,Th)(Ti,Nb,Ta)2O6

orthorhombisch : mmm : Pbcn

IV/D.19-010

Uranopolycrase

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

orthorhombisch : mmm : Pbcn

IV/D.19-015

'Yttrocrasite-(Y)'

(Y,Th,Ca,U)(Ti,Fe3+)2(O,OH)6

IV/D.19-020

Fersmite

(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6

orthorhombisch : mmm : Pbcn

IV/D.19-030

Euxenite-(Y)

Y(Nb0.5Ti0.5)2O6

orthorhombisch : mmm : Pbcn

IV/D.19-040

Tanteuxenite-(Y)

(Y,Ce,Ca)(Ta,Nb,Ti)2(O,OH)6

orthorhombisch : mmm : Pbcn

IV/D.19-050

Calciosamarskite

(Ca,Fe,Y)(Nb,Ta,Ti)O4

IV/D.19-055

Samarskite-(Yb)

YbNbO4

monoklin : 2/m : P2/c

IV/D.19-058

Samarskite-(Y)

YFe3+Nb2O8

orthorhombisch : mmm : Pbcn

IV/D.19-060

'Písekite-(Y)'

(Y,As,Ca,Fe,U)(Nb,Ti,Ta)O4

monoklin : 2/m : P21/n

IV/D.19-065

Ishikawaite

(U,Fe,Y)NbO4

IV/D.19-070

'Yttrocolumbite-(Y)'

(Y,U,Fe2+)(Nb,Ta)O4

IV/D.19-080

Yttrotantalite-(Y)

(Y,U,Fe2+)(Ta,Nb)(O,OH)4

IV/D.19-090

Loranskite-(Y)

(Y,Ce,Ca)ZrTaO6

IV/D.19-100

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

Sanmartinite

ZnWO4

monoklin : 2/m : P2/c

4.DH.100

Huanzalaite

MgWO4

monoklin : 2/m : P2/c

4.DH.110

Ferberite

Fe2+WO4

monoklin : 2/m : P2/c

4.DH.120

Hübnerite

MnWO4

monoklin : 2/m : P2/c

4.DH.130

Heftetjernite

ScTaO4

monoklin : 2/m : P2/c

4.DH.150

Samarskite-(Y)

YFe3+Nb2O8

orthorhombisch : mmm : Pbcn

4.DH.160

Samarskite-(Yb)

YbNbO4

monoklin : 2/m : P2/c

4.DH.165

Ishikawaite

(U,Fe,Y)NbO4

4.DH.170

Calciosamarskite

(Ca,Fe,Y)(Nb,Ta,Ti)O4

4.DH.180

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

Fergusonite-(Y)

YNbO4

tetragonal : 4/m : I41/a

08.01.01.01

Formanite-(Y)

YTaO4

monoklin : 2/m : P2/a

08.01.01.02

'Fergusonite-(Ce)'

CeNbO4

tetragonal : 4/m : I41/a

08.01.01.03

Yttrotantalite-(Y)

(Y,U,Fe2+)(Ta,Nb)(O,OH)4

08.01.03.01

'Yttrocolumbite-(Y)'

(Y,U,Fe2+)(Nb,Ta)O4

08.01.03.02

Ishikawaite

(U,Fe,Y)NbO4

08.01.04.01

Loranskite-(Y)

(Y,Ce,Ca)ZrTaO6

08.01.05.01

Stibiocolumbite

SbNbO4

orthorhombisch : mm2 : Pc21n

08.01.06.01

Stibiotantalite

Sb3+TaO4

orthorhombisch : mm2 : Pc21n

08.01.06.02

Bismutotantalite

Bi(Ta,Nb)O4

orthorhombisch : mmm : Pcnn

08.01.06.03

Bismutocolumbite

Bi(Nb,Ta)O4

orthorhombisch : mmm : Pcnn

08.01.06.04

Alumotantite

AlTaO4

orthorhombisch : mmm : Pbcn

08.01.07.01

Wodginite

Mn2+Sn4+Ta2O8

monoklin : 2/m : C2/c

08.01.08.01

Ferrowodginite

(Fe2+,Mn2+)(Sn,Ti,Fe3+,Ta)(Ta,Nb)2O8

monoklin : 2/m : C2/c

08.01.08.02

Titanowodginite

(Mn2+,Fe2+)(Ti,Sn,Ta,Sc)(Ta,Nb)2O8

monoklin : 2/m : C2/c

08.01.08.03

Lithiowodginite

(Li,Mn,Fe)(Ta,Nb,Sn)3O8

monoklin : 2/m : C2/c

08.01.08.04

Ferrotitanowodginite

(Fe2+,Mn2+)(Ti,Sn4+,Ta,Fe3+)(Ta,Nb)2O8

monoklin : 2/m : C2/c

08.01.08.05

Liandratite

U6+(Nb,Ta)2O8

trigonal : 3m : P31m

08.01.09.01

Petscheckite

U4+Fe2+Nb2O8

trigonal : 3m : P31m

08.01.09.02

Alternative Name

Japanese

石川石

CNMNC symbol

Symbol

Ikw

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

German pages

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English pages

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