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Sanidine (Sanidin)

Pictures (159 Images total)

Sanidin
Views (File:
1254743994
): 9820
Sanidin
Bildbreite: 3 mm; Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Eifel, Deutschland
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Vordereifel, Verbandsgemeinde/Ettringen/Bellerberg/Ettringer Bellerberg (Stbr. Caspar)
Mineral: Sanidine
Image: 1254743994
Rating: 10 (votes: 2)
License: Usage for Mineralienatlas project only
Sanidin

Bildbreite: 3 mm; Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Eifel, Deutschland
Copyright: Stephan Wolfsried
Contribution: Hg 2009-10-05
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Vordereifel, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Sanidine
Views (File:
1546193431
): 3609
Sanidine
Perfect color and gem quality, naturally etched sanidine crystal, from Itrongay, Mahasoa East Commune, Betroka District, Anosy Region, Toliara Province, Madagascar; Dimensions: 32 mm x 18 mm x 16 mm
Copyright: pegmatite; Contribution: pegmatite
Location: Madagaskar/Anosy, Region/Betroka, Distrikt/Mahasoa East/Itrongay
Mineral: Sanidine
Image: 1546193431
Rating: 10 (votes: 1)
License: Usage for Mineralienatlas project only
Sanidine

Perfect color and gem quality, naturally etched sanidine crystal, from Itrongay, Mahasoa East Commune, Betroka District, Anosy Region, Toliara Province, Madagascar; Dimensions: 32 mm x 18 mm x 16 mm
Copyright: pegmatite
Contribution: pegmatite 2018-12-30
Locality: Itrongay / Mahasoa East / Betroka, Distrikt / Anosy, Region / Madagaskar
Sanidin
Views (File:
1719218525
): 71
Sanidin
Emmelberg, Üdersdorf, Daun, Eifel, Rheinland-Pfalz, Bildbreite 1,8mm
Copyright: Karl-Heinz M.; Contribution: khm
Collection: Karl-Heinz M.
Location: Deutschland/Rheinland-Pfalz/Vulkaneifel, Landkreis/Daun/Üdersdorf/Emmelberg
Mineral: Sanidine
Image: 1719218525
Rating: 10 (votes: 1)
License: Usage for Mineralienatlas project only
Sanidin

Emmelberg, Üdersdorf, Daun, Eifel, Rheinland-Pfalz, Bildbreite 1,8mm
Collection: Karl-Heinz M.
Copyright: Karl-Heinz M.
Contribution: khm 2024-06-24
Locality: Emmelberg / Üdersdorf / Daun / Vulkaneifel, Landkreis / Rheinland-Pfalz / Deutschland
Sanidin auf einer Nadel der Pyroxen-Gruppe
Views (File:
1174985136
): 4442, Rating: 8.89
Sanidin auf einer Nadel der Pyroxen-Gruppe
Bildbreite: 3 mm; Fundort Stbr. Caspar, Ettringer Bellerberg, Ettringen, Mayen, Eifel
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Vordereifel, Verbandsgemeinde/Ettringen/Bellerberg/Ettringer Bellerberg (Stbr. Caspar)
Mineral: Sanidine
Image: 1174985136
Rating: 8.89 (votes: 9)
License: Usage for Mineralienatlas project only
Sanidin auf einer Nadel der Pyroxen-Gruppe

Bildbreite: 3 mm; Fundort Stbr. Caspar, Ettringer Bellerberg, Ettringen, Mayen, Eifel
Copyright: Stephan Wolfsried
Contribution: Hg 2007-03-27
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Vordereifel, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Sanidin
Views (File:
1200996889
): 6045, Rating: 8.88
Sanidin
Bildbreite: 3 mm; Fundort: Niveligsberg, Kelberg, Eifel, Rheinland-Pfalz, Deutschland
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Rheinland-Pfalz/Vulkaneifel, Landkreis/Kelberg/Drees/Niveligsberg
Mineral: Sanidine
Image: 1200996889
Rating: 8.88 (votes: 8)
License: Usage for Mineralienatlas project only
Sanidin

Bildbreite: 3 mm; Fundort: Niveligsberg, Kelberg, Eifel, Rheinland-Pfalz, Deutschland
Copyright: Stephan Wolfsried
Contribution: Hg 2008-01-22
Locality: Niveligsberg / Drees / Kelberg / Vulkaneifel, Landkreis / Rheinland-Pfalz / Deutschland

You find additional specimen at the Geolitho Museum

Collectors Summary

Color farblos, weiß
Streak color weiß
Lustre Perlmuttglanz - Glasglanz
Hardness (Mohs) 6.0
Solubility +++ HF, +- verdünnte Säuren
Crystal System monoklin, C2/m
Morphology Kristalle tafelig [010], meist von Rissen durchzogen

Chemism

Chemical formula

(K,Na)(Si,Al)4O8

Chemical composition

Aluminium, Natrium, Silicium, Kalium, Sauerstoff

Unit weight: 274.30474325 u; Number of atoms in the formula: 13

Info

Empirical formula:

(K0.75Na0.25)(Si0.75Al0.25)4O8

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

46.66

8

61.54

15.9994300

127.9954400
Sodium

Na

2.10

0.25

1.92

22.9897702

5.7474426
Aluminium

Al

9.84

1

7.69

26.9815382

26.9815382
Silicon

Si

30.72

3

23.08

28.0855300

84.2565900
Potassium

K

10.69

0.75

5.77

39.0983100

29.3237325

Strunz 9th edition incl. updates

9.FA.30

9: Silikate (Germanate)
F: Gerüstsilikate (Tektosilikate) ohne zeolithisches H2O
A: Gerüstsilikate (Tektosilicates) ohne weitere [Anionen]
30:Feldspat: Alkali

Lapis Classification

VIII/J.06-020

VIII: SILIKATE
J: Gerüstsilikate (mit Zeolithen)
6: Ohne tetraederfremde Anionen; Feldspat-Gruppe

Classification by Hölzel

9.FC.110

9: SILICATES
F: Tektosilicates
C: Feldspar-Group

Dana 8th edition

76.01.01.02

76: Tektosilicates Tectosilicate Al-Si Framework
01: Tektosilicates Tectosilicate Al-Si Framework with Al-Si frameworks
01: K (Na,Ba) feldspars

IMA status

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

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Feldspar group  ⇒ Alkali feldspar

Optical Properties

Color

farblos, weiß

Streak color

weiß

Diaphaneity (Transparency)

transparent bis durchscheinend

Lustre

Perlmuttglanz - Glasglanz

max. Birefringence

0.005
Birefringence chart\! Sanidine title=Birefringence chart Sanidine

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

1.518

RI value β

1.522

RI value γ / ε

1.523

Ri mean

1.521

2V angle

Biaxial (-) 33°~

Optical Data Luminescence

Color SW-UV (254nm)

  

rosa

SW-UV Other Colors

    

rot, violettrot

Afterglow (Persistant Luminescence)

keine Daten

Thermoluminescence

vorhanden

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

8.56

Cell parameters b (Å)

13.03

Cell parameters c (Å)

7.175

Cell parameters a/b or c/a

0.657

Cell parameters c/b

0.551

Cell parameters α

90°

Cell parameters β

115.98

Cell parameters γ

90°

Z

4

Volume (ų)

719.406

X-Ray Powder Diffraction

4.16(70),
3.76(70),
3.45(50),
3.27(70),
3.26(100),
3.25(70),
3.22(90),
2.976(30)
XRD chart Sanidine

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

Morphology

Kristalle tafelig [010], meist von Rissen durchzogen

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

6.0

VHN (Hardness Vickers)

730 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.55

2.532 ( ρ calc. Mineralienatlas )

Instability

+++ HF, +- verdünnte Säuren

(Co-)Type locality

(Co-)Type locality

Deutschland/Nordrhein-Westfalen/Köln, Bezirk/Rhein-Sieg-Kreis/Königswinter/Drachenfels

Preface

Occurrences

Hochtemperaturmodifikation des Kalifeldspats in vulkanischen Gesteinen (Trachyt, Basalt)

Author (Name, Year)

Nose, 1808

References

Rock-forming Minerals (Deer, Howie & Zussmann), 2nd ed., 4A (2001)

IMA group assignments

Varieties

Azulicite

Blaue, transparente, schillernde Varietät von Sanidin

Other languages

Finnish

Sanidiini

German

Sanidin

Spanish

Sanidina

English

Sanidine

French

Sanidine

Russian

Санидин

Hebrew

סנידין

Japanese

サニディン

Traditional Chinese

透長石

Simplified Chinese

透长石

Alternative Name

German

Glasiger Feldspath

Glassy Feldspar

Grnzerite

German

Gränzerit

Spanish

Gränzerita

Italian

Gränzerita

Gränzerite

German

Rhyacolit

Spanish

Rhyacolita

Rhyacolite

Rhyakolith

German

Riacolit

Spanish

Riacolita

Riacolite

Italian

Sanidino

CNMNC symbol

Symbol

Sa

Rock part of

Locations with GPS information

IDs

GUSID (Global unique identifier short form) TuhWfLK4IE2dcTynQY3qwQ
GUID (Global unique identifier) 7C56E84E-B8B2-4D20-9D71-3CA7418DEAC1
Database ID 3378