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Ishikawaite

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Views (Image: 1605608573): 125

Ishikawait

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

Collection:

Rockhounder

Contribution: Rockhounder 2020-11-17

Locality: Little Patsy Pegmatite / South Platte District / Jefferson Co. / Colorado / USA

Views (Image: 1243762194): 1361

Ishikiwait-Kristall epitaktisch auf Ferrocolumbit

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

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:

(U_0.6Fe_0.3Y_0.1)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

Search for minerals with similar chemistry

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 (Å³)	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)
	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

(Co-)Type locality

Japan /Honshu /Tohoku, Region /Fukushima, Präfektur /Ishikawa, Landkreis /Ishikawa

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 monoklin	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 monoklin	4.DB.25
'Yttrocolumbite-(Y)'	(Y,U,Fe²⁺)(Nb,Ta)O₄ orthorhombisch	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(Nb_0.5Ti_0.5)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 monoklin	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 monoklin	IV/D.19-070
'Yttrocolumbite-(Y)'	(Y,U,Fe²⁺)(Nb,Ta)O₄ orthorhombisch	IV/D.19-080
Yttrotantalite-(Y)	(Y,U,Fe²⁺)(Ta,Nb)(O,OH)₄ orthorhombisch	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 monoklin	4.DH.170
Calciosamarskite	(Ca,Fe,Y)(Nb,Ta,Ti)O₄ monoklin	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 orthorhombisch	08.01.03.01
'Yttrocolumbite-(Y)'	(Y,U,Fe²⁺)(Nb,Ta)O₄ orthorhombisch	08.01.03.02
Ishikawaite	(U,Fe,Y)NbO₄ monoklin	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

Other languages

German	Ishikawait
French	Ishikawaite
English	Ishikawaite
Spanish	Ishikawaíta
Russian	Ишикаваит

Alternative Name

Japanese

石川石

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

German pages	DeWikiPedia - search for: Ishikawait Google-Bilder-Suche - search for: Ishikawait Mineralogisch-Petrographisches-Institut Hamburg - search for: Ishikawait
English pages	Mindat - search for: Ishikawaite Webmineral - search for:Ishikawaite Handbook-of-Mineralogy - search for: Ishikawaite RRUFF - Raman, XRD and other mineral data - search for: Ishikawaite RRUFF - References and PDF downloads - search for: Ishikawaite American-Mineralogist-Crystal-Structure-Database - search for: Ishikawaite Athena - search for: Ishikawaite
Russian pages	Webmineral.ru - search for: Ишикаваит

Mineral Dealer

German pages

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Crystal-Treasure.com - search for: Ishikawait
Bosse - search for: Ishikawait

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