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Thortveitite

Pictures (41 Images total)

Thortveitit
Views (File:
1506191857
): 1675
Thortveitit
Eine Stufe ca. 5cm x 5cm x 5cm bestehend aus Thortveitit mit Kristallen bis 5cm x 1cm; Gefunden in Iveland in Norwegen.
Copyright: Sascha Gemballa; Contribution: Lars23
Collection: Lars23
Location: Norwegen/Agder, Provinz/Iveland
Mineral: Thortveitite
Image: 1506191857
Rating: 10 (votes: 1)
License: Usage for Mineralienatlas project only
Thortveitit

Eine Stufe ca. 5cm x 5cm x 5cm bestehend aus Thortveitit mit Kristallen bis 5cm x 1cm; Gefunden in Iveland in Norwegen.
Collection: Lars23
Copyright: Sascha Gemballa
Contribution: Lars23 2017-09-23
Locality: Iveland / Agder, Provinz / Norwegen
Thortveitit
Views (File:
1349993452
): 2455
Thortveitit
Bildbreite: ca. 0,6mm; Fundort: Seula Mine, Monte Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola, Piemont, Italien; Leitz L25X/0.4
Copyright: Josef 84,55; Contribution: Josef 84,55
Collection: Josef 84,55
Location: Italien/Piemont (Piemonte), Region/Verbano-Cusio-Ossola, Provinz/Baveno/Oltrefiume/Monte Camoscio/Montecatini-Steinbruch (Seula Mine)
Mineral: Thortveitite
Image: 1349993452
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Thortveitit

Bildbreite: ca. 0,6mm; Fundort: Seula Mine, Monte Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola, Piemont, Italien; Leitz L25X/0.4
Collection: Josef 84,55
Copyright: Josef 84,55
Contribution: Josef 84,55 2012-10-11
Locality: Montecatini-Steinbruch (Seula Mine) / Monte Camoscio / Oltrefiume / Baveno / Verbano-Cusio-Ossola, Provinz / Piemont (Piemonte), Region / Italien
Thortveitit
Views (File:
1349993589
): 3825, Rating: 7.6
Thortveitit
Bildbreite: ca. 1,5mm; Fundort: Seula Mine, Monte Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola, Piemont, Italien; Nikon EPlan10x/0.25 LWD
Copyright: Josef 84,55; Contribution: Josef 84,55
Collection: Josef 84,55
Location: Italien/Piemont (Piemonte), Region/Verbano-Cusio-Ossola, Provinz/Baveno/Oltrefiume/Monte Camoscio/Montecatini-Steinbruch (Seula Mine)
Mineral: Thortveitite
Image: 1349993589
Rating: 7.6 (votes: 5)
License: Usage for Mineralienatlas project only
Thortveitit

Bildbreite: ca. 1,5mm; Fundort: Seula Mine, Monte Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola, Piemont, Italien; Nikon EPlan10x/0.25 LWD
Collection: Josef 84,55
Copyright: Josef 84,55
Contribution: Josef 84,55 2012-10-11
Locality: Montecatini-Steinbruch (Seula Mine) / Monte Camoscio / Oltrefiume / Baveno / Verbano-Cusio-Ossola, Provinz / Piemont (Piemonte), Region / Italien
Thortveitit
Views (File:
1226839109
): 2027
Thortveitit
Größe: 0,9 mm; Fundort: Baveno, Verbano-Cusio-Ossola, Piemont (Piemonte), Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Piemont (Piemonte), Region/Verbano-Cusio-Ossola, Provinz/Baveno
Mineral: Thortveitite
Image: 1226839109
Rating: 7.67 (votes: 3)
License: Usage for Mineralienatlas project only
Thortveitit

Größe: 0,9 mm; Fundort: Baveno, Verbano-Cusio-Ossola, Piemont (Piemonte), Italien
Copyright: Matteo Chinellato
Contribution: Hg 2008-11-16
Locality: Baveno / Verbano-Cusio-Ossola, Provinz / Piemont (Piemonte), Region / Italien
Thortveitit
Views (File:
1289049387
): 1637
Thortveitit
Größe: 1,17 mm; Fundort: Seula Mine, Monte Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola, Piemont, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Italien/Piemont (Piemonte), Region/Verbano-Cusio-Ossola, Provinz/Baveno/Oltrefiume/Monte Camoscio/Montecatini-Steinbruch (Seula Mine)
Mineral: Thortveitite
Image: 1289049387
Rating: 7.5 (votes: 2)
License: Usage for Mineralienatlas project only
Thortveitit

Größe: 1,17 mm; Fundort: Seula Mine, Monte Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola, Piemont, Italien
Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2010-11-06
Locality: Montecatini-Steinbruch (Seula Mine) / Monte Camoscio / Oltrefiume / Baveno / Verbano-Cusio-Ossola, Provinz / Piemont (Piemonte), Region / Italien

Collectors Summary

Color braun, grauschwarz, schwarz, graulich grün, blau
Streak color grau
Hardness (Mohs) 6.5
Solubility - HCl
Crystal System monoklin, C2/m

Chemism

Chemical formula

(Sc,Y)2Si2O7

Chemical composition

Scandium, Silicium, Yttrium, Sauerstoff

Unit weight: 280.0538622 u; Number of atoms in the formula: 11

Info

Empirical formula:

(Sc0.75Y0.25)2Si2O7

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

39.99

7

63.64

15.9994300

111.9960100
Silicon

Si

20.06

2

18.18

28.0855300

56.1710600
Scandium

Sc

24.08

1.5

13.64

44.9559108

67.4338662
Yttrium

Y

15.87

0.5

4.55

88.9058520

44.4529260

Analysis wt%

Dy2O3 : 0.45, Er2O3 : 0.97, Yb2O3 : 4.52, Lu2O3 : 1.03, Y2O3 : 8.41, ZrO2 : 1.71, Sc2O3 : 37.13, Fe2O3 : 1.68, SiO2 : 41.29, Al2O3 : 0.88, Ln2O3 : 15.57 (Ref: American Mineralogist 88)

Strunz 9th edition incl. updates

9.BC.05

9: Silikate (Germanate)
B: Gruppensilikate (Sorosilikate)
C: Si2O7 Gruppen, ohne nicht-tetrahedrale Anionen; Kationen in oktahedraler [6] und/oder anderer Koordination
05:Thortveitit-Gruppe

Lapis Classification

VIII/C.01-010

VIII: SILIKATE
C: Gruppensilikate
1: Gruppensilikate [Si2O7] 6-, ohne tetraederfremde Anionen

Classification by Hölzel

9.BA.100

9: SILICATES
B: Sorosilicates
A: Thortveitite-Group

Dana 8th edition

55.02.01a.04

55: Sorosilicate Minerals
02: Sorosilicates Sorosilicate Si2O7 Groups, Generally with No Additional Anions with cations in [6] coordination
01a: Thortveitite group

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

braun, grauschwarz, schwarz, graulich grün, blau

Streak color

grau

Diaphaneity (Transparency)

durchscheinend bis opak

max. Birefringence

0.051
Birefringence chart\! Thortveitite title=Birefringence chart Thortveitite

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

1.753

RI value β

1.791

RI value γ / ε

1.804

Ri mean

1.783

2V angle

Biaxial (-) 63°~

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

6.582

Cell parameters b (Å)

8.555

Cell parameters c (Å)

4.693

Cell parameters a/b or c/a

0.769

Cell parameters c/b

0.549

Cell parameters α

90°

Cell parameters β

102.58

Cell parameters γ

90°

Z

2

Volume (ų)

257.914

X-Ray Powder Diffraction

5.18(60),
4.58(20),
3.18(40),
3.14(100),
2.965(60),
2.627(30),
2.596(50),
2.200(20)
XRD chart Thortveitite

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)

6.5

VHN (Hardness Vickers)

960 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.5

3.606 ( ρ calc. Mineralienatlas )

Instability

- HCl

(Co-)Type locality

(Co-)Type locality

Norwegen/Agder, Provinz/Setesdal/Evje og Hornnes/Landsverk/Landsverk 1 (Landsverk Feldspatmine; Jokeli Mine)

Norwegen/Agder, Provinz/Setesdal/Evje og Hornnes/Landsverk/Landsverk 3

Type material

Geowissenschaftliche Sammlungen des GZG, Göttingen

Collection number of type material

GZG.MIN.8.3.1.4 / UG023-025 Typusschränke Minerale

Preface

Author (Name, Year)

Schetelig, 1911

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 796

Other languages

German

Thortveitit

Spanish

Thortveitita

French

Thortveitite

English

Thortveitite

Russian

Тортвейтит

Traditional Chinese

鈧釔石

Simplified Chinese

钪钇石

Japanese

ﾄﾙﾄﾍﾞｲﾄ石

CNMNC symbol

Symbol

Tvt

Locations with GPS information

IDs

GUSID (Global unique identifier short form) CnFlle5A2UamRUXT8sZ7pg
GUID (Global unique identifier) 9565710A-40EE-46D9-A645-45D3F2C67BA6
Database ID 3837