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Sanidine (Sanidin)

Pictures (130 Images total)

Sanidin
Views (Image: 1254743994): 8105
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 / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Sanidine
Views (Image: 1546193431): 3168
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 (Image: 1200996889): 5606, Rating: 8.88
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
Korund auf Sanidin
Views (Image: 1164575569): 6498, Rating: 9.14
Korund auf Sanidin

Ein winziges rosa Korundaggregat auf Sanidin; Bildbreite: 1,5 mm; Fundort: Wannenköpfe bei Ochtendung, Eifel, Deutschland
Copyright: Fred Kruijen
Contribution: Fred Kruijen 2006-11-26
Locality: Wannenköpfe / Ochtendung / Maifeld, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Sanidin xx
Views (Image: 1164496992): 8274, Rating: 9
Sanidin xx

Bildbreite: 2,5 mm; Fundort: Wannenköpfe bei Ochtendung, Eifel, Deutschland
Copyright: Fred Kruijen
Contribution: Fred Kruijen 2006-11-26
Locality: Wannenköpfe / Ochtendung / Maifeld, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Sanidin auf einer Nadel der Pyroxen-Gruppe
Views (Image: 1174985136): 3199, Rating: 8.83
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 / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland

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

Volumne (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

 
Feldspar group
 
 
 

 
 
Alkali feldspar
 
 
 

 
 
 
Anorthoclase ?
(Na,K)AlSi3O8
triklin
C1

 
 
 
Buddingtonite
(NH4)AlSi3O8·0.5 H2O
monoklin
P21, P21/m

 
 
 
Celsian
BaAl2Si2O8
monoklin
I2/c

 
 
 
Hyalophane
(K,Ba)Al(Si,Al)3O8
monoklin
C2/m

 
 
 
Microcline
KAlSi3O8
triklin
C1

 
 
 
Orthoclase
KAlSi3O8
monoklin
C2/m

 
 
 
Rubicline
(Rb,K)[AlSi3O8]
triklin
P1

 
 
 
Sanidine
(K,Na)(Si,Al)4O8
monoklin
C2/m

Refresh list

Actuality: 16. May 2022 - 01:09:54

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

 
Rocks

 
 
igneous rocks and sediments

 
 
 
crystalline igneous rocks

 
 
 
 
exotic crystalline rocks

 
 
 
 
 
lamproite  

 
 
 
 
 
 
olivine-diopside-richterite-madupitic lamproite

 
 
 
 
 
 
 
jumillite  

 
 
 
 
normal crystalline rocks

 
 
 
 
 
coarse-grained crystalline rocks

 
 
 
 
 
 
granitic-rock

 
 
 
 
 
 
 
granite

 
 
 
 
 
 
 
 
caucasite  

 
 
 
 
 
fine-grained crystalline rocks

 
 
 
 
 
 
dacitic-rock

 
 
 
 
 
 
 
dacite  

 
 
 
 
 
 
trachytic-rock

 
 
 
 
 
 
 
basaltic trachyandesite

 
 
 
 
 
 
 
 
absarokite  

 
 
 
 
 
 
 
trachyandesite

 
 
 
 
 
 
 
 
banakite  

Refresh list | View legend

Hint

- Essential mineral - Important for the classification of the rock.
- Accessory or non-essential mineral - this minerals are common, sometimes major part of, but are not always present.

Actuality: 16. May 2022 - 01:09:54

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

German pages

 DeWikiPedia - search for: Sanidin
Google-Bilder-Suche - search for: Sanidin
Mineralienatlas.de (Forum) - search for: Sanidin

English pages

 Mindat - search for: Sanidine
Webmineral - search for:Sanidine
Handbook-of-Mineralogy - search for: Sanidine
RRUFF - Raman, XRD and other mineral data - search for: Sanidine
RRUFF - References and PDF downloads - search for: Sanidine
American-Mineralogist-Crystal-Structure-Database - search for: Sanidine
Strahlen.org - search for: Sanidine

Russian pages

 Webmineral.ru - search for: Санидин

Mineral Dealer

German pages

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Crystal-Treasure.com - search for: Sanidin
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Locations with GPS information