https://www.edelsteine-neuburg.de
https://www.mineraliengrosshandel.com
https://www.mineralbox.biz
https://www.mineral-bosse.de
'._('einklappen').'
 

Ishikawaite

Pictures (2 Images total)

Ishikawait
Views (Image: 1605608573): 246
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): 1452
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

Other languages

German

Ishikawait

French

Ishikawaite

English

Ishikawaite

Spanish

Ishikawaíta

Russian

Ишикаваит

Alternative Name

Japanese

石川石

CNMNC symbol

Symbol

Ikw

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

German pages

DeWikiPedia - search for: Ishikawait
Google-Bilder-Suche - search for: Ishikawait
Mineralienatlas.de (Forum) - 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
Strahlen.org - search for: Ishikawaite

Russian pages

Webmineral.ru - search for: Ишикаваит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Ishikawait
Crystal-Treasure.com - search for: Ishikawait
Bosse - search for: Ishikawait
Edelsteine Neuburg - Gundolf Fischer - search for: Ishikawait

Locations with GPS information