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Hundholmenite-(Y)

Pictures (2 Images total)

Hundholmenite-(Y)
Views (File:
1401615608
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Hundholmenite-(Y)
Brownish crystals; FOV 3 x 2 mm; Stetind pegmatite, Tysfjord, Nordland, Norway
Copyright: Roberto Bosi; Contribution: Roberto Bosi
Collection: Roberto Bosi
Location: Norwegen/Nordland, Provinz/Narvik, Kommune/Stetind Pegmatit
Mineral: Hundholmenite-(Y)
Image: 1401615608
License: Usage for Mineralienatlas project only
Hundholmenite-(Y)

Brownish crystals; FOV 3 x 2 mm; Stetind pegmatite, Tysfjord, Nordland, Norway

Collection: Roberto Bosi
Copyright: Roberto Bosi
Contribution: Roberto Bosi 2014-06-01
Locality: Stetind Pegmatit / Narvik, Kommune / Nordland, Provinz / Norwegen
Hundholmenit-Y
Views (File:
1473494223
): 555
Hundholmenit-Y
von Stetind am Tysfjord, Nordland, Norwegen; tafelige mittelbraune Kristalle, als Begleiter Bastnäsit-Ce; BB = 3,0 mm;
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A014364, Donator: Astrid Haugen
Location: Norwegen/Nordland, Provinz/Narvik, Kommune/Stetind Pegmatit
Mineral: Hundholmenite-(Y)
Image: 1473494223
License: Usage for Mineralienatlas project only
Hundholmenit-Y (SNr: A014364)

von Stetind am Tysfjord, Nordland, Norwegen; tafelige mittelbraune Kristalle, als Begleiter Bastnäsit-Ce; BB = 3,0 mm;

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2016-09-10
Locality: Stetind Pegmatit / Narvik, Kommune / Nordland, Provinz / Norwegen

You find additional specimen at the Geolitho Museum

Collectors Summary

Color blass rötlichbraun - graubraun, graugelb - grau
Streak color weiß
Lustre Glasglanz bis Diamantglanz
Hardness (Mohs) 5 - 6
Cleavages keine
Fracture uneben bis halbmuschelig
Solubility +++ HCl
Crystal System trigonal, R3m

Chemism

Chemical formula

(Y,REE,Ca,Na)15(Al,Fe3+)CaxAs3+1-x(Si,As5+)Si6B3(O,F)48

Chemical composition

Aluminium, Arsen, Calcium, Eisen, Natrium, Silicium, Yttrium, Bor, Fluor, Sauerstoff, REE

Analysis wt%

Ø As2O5 : 1.09, As2O3 : 0.80, SiO2 : 15.07, B2O3 : 3.92, Al2O3 : 1.23, Fe2O3 : 0.79, Y2O3 : 18.07, La2O3 : 4.84, Ce2O3 : 12.70, Pr2O3 : 1.73, Nd2O3 : 7.87, Sm2O3 : 2.93, Eu2O3 : 0.83, Gd2O3 : 4.39, Tb2O3 : 0.49, Dy2O3 : 4.20, Ho2O3 : 0.80, Er2O3 : 3.16, Tm2O3 : 0.79, Yb2O3 : 3.53, Lu2O3 : 0.78, CaO : 6.45, Ln2O3 : 67.11 (Ref: Mineralogical Magazine 2007)

Strunz 9th edition incl. updates

9.AJ.35

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
J: Insel(Neso)silikate mit BO3 Triangeln und /oder B[4], Be[4] Tetraedern, eckenteilend mit SiO4
35:Vicanit-Gruppe

Lapis Classification

VIII/B.33-028

VIII: SILIKATE
B: Inselsilikate mit tetraederfremden Anionen
33: Kationen mit Koordinationszahlen zwischen [8] und [12]; Beryllium- und Bor-Inselsilikate

Classification by Hölzel

9.AK.555

9: SILICATES
A: Nesosilicates
K: Boro and Beryllo Nesosilicates
5: C large

IMA status

anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

blass rötlichbraun - graubraun, graugelb - grau

Streak color

weiß

Diaphaneity (Transparency)

durchscheinend

Lustre

Glasglanz bis Diamantglanz

max. Birefringence

0.009

Birefringence chart\! Hundholmenite-(Y) title=Birefringence chart Hundholmenite-(Y)

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

1.758

RI value γ / ε

1.749

Ri mean

1.755

2V angle

u

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

166

Space Group

R3m

Cell parameters a (Å)

10.675

Cell parameters b (Å)

-

Cell parameters c (Å)

27.02

Cell parameters a/b or c/a

2.531

Cell parameters c/b

-

Z

3

Volume (ų)

2666.562

X-Ray Powder Diffraction

4.38(33), 3.114(43), 3.095(29), 2.972(100), 2.947(76), 2.924(66), 2.681(36), 1.978(37)

XRD chart Hundholmenite-(Y)

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)

5 - 6

VHN (Hardness Vickers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

5.21 gemessen

Cleavages

keine

Fracture

uneben bis halbmuschelig

Tenacity

spröde

Instability

+++ HCl

Preface

Name from

Typlokalität

References

Mineralien Welt 05/08, Steffen Jahn, Die neuen Mineralien 2007 - 2008

http://norcryst.no/Image/Hundholmenite-%28Y%29.pdf

Other languages

German

Hundholmenit-(Y)

English

Hundholmenite-(Y)

Russian

Хундхолменит-(Y)

CNMNC (IMA)-Number

IMA 2006-005

CNMNC symbol

Symbol

Hhm-Y

Locations with GPS information

IDs

GUSID (Global unique identifier short form) HQPAaqIqn0CI9Ua-LDIm9w
GUID (Global unique identifier) 6AC0031D-2AA2-409F-88F5-46BE2C3226F7
Database ID 4403