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Sacrofanite

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Sacrofanite
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Sacrofanite
Glassy grains,; FOV 5 x 5 mm; Turii alkaline Massif , Kola Peninsula, Murmanskaja Oblast', Russia
Copyright: Roberto Bosi; Contribution: Roberto Bosi
Collection: Roberto Bosi
Location: Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Turii Kap/Turii Alkali-Massiv
Mineral: Sacrofanite
Image: 1401622402
License: Usage for Mineralienatlas project only
Sacrofanite

Glassy grains,; FOV 5 x 5 mm; Turii alkaline Massif , Kola Peninsula, Murmanskaja Oblast', Russia
Collection: Roberto Bosi
Copyright: Roberto Bosi
Contribution: Roberto Bosi 2014-06-01
Locality: Turii Alkali-Massiv / Turii Kap / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland

Collectors Summary

Color farblos
Hardness (Mohs) 5.75
Solubility +++ Säuren
Crystal System hexagonal, P62c

Chemism

Chemical formula

(Na,Ca,K)9(Si,Al)12O24[(OH)2,(SO4),(CO3),Cl2)]3·0.5 H2O

Chemical composition

Aluminium, Calcium, Chlor, Natrium, Silicium, Kalium, Kohlenstoff, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 1118.68767238 u; Number of atoms in the formula: 52.6

Info

Empirical formula:

(Na0.6Ca0.3K0.1)9(Si0.75Al0.25)12O24[((OH)2)0.55((SO4))0.3((CO3))0.1(Cl2))0.05]3·0.5H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.19

2.1

3.99

1.0079470

2.1166887
Carbon

C

0.11

0.1

0.19

12.0107800

1.2010780
Oxygen

O

38.76

27.1

51.52

15.9994300

433.5845530
Sodium

Na

11.10

5.4

10.27

22.9897702

124.1447591
Aluminium

Al

7.24

3

5.70

26.9815382

80.9446146
Silicon

Si

22.60

9

17.11

28.0855300

252.7697700
Sulfur

S

0.86

0.3

0.57

32.0655000

9.6196500
Chlorine

Cl

6.34

2

3.80

35.4532000

70.9064000
Potassium

K

3.15

0.9

1.71

39.0983100

35.1884790
Calcium

Ca

9.67

2.7

5.13

40.0784000

108.2116800

Analysis wt%

SiO2 : 33.06, Al2O3 : 24.94, CaO : 8.76, Na2O : 16.50, K2O : 5.56, H2O : 2.47, CO2 : 1.00, SO3 : 7.77, Cl : 0.59 (Ref: Neues Jahrbuch für Mineralogie, (Monatshefte) 80)

Strunz 9th edition incl. updates

9.FB.05

9: Silikate (Germanate)
F: Gerüstsilikate (Tektosilikate) ohne zeolithisches H2O
B: Gerüstsilikate (Tektosilicates) mit weiteren [Anionen]
05:Cancrinit-Gruppe

Lapis Classification

VIII/J.09-060

VIII: SILIKATE
J: Gerüstsilikate (mit Zeolithen)
9: Mit tetraederfremden Anionen; Cancrinit-Gruppe

Classification by Hölzel

9.FE.270

9: SILICATES
F: Tektosilicates
E: Hexagonal or trigonal with other Anions
2: Liottite-Group - hexagonal, axis for a~~12A and c=n*~~5A, n>1

Dana 8th edition

76.02.05.13

76: Tektosilicates Tectosilicate Al-Si Framework
02: Tektosilicates Tectosilicate Al-Si Framework Feldspathoids and related species
05: Cancrinite group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Cancrinit–Sodalit supergroup

Optical Properties

Color

farblos

max. Birefringence

0.019
Birefringence chart\! Sacrofanite title=Birefringence chart Sacrofanite

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

1.505

RI value γ / ε

1.486

Ri mean

1.499

2V angle

Uniaxial (-)

Crystallography

Crystal System

hexagonal

Class (H-M)

6m2

Space Group number

190

Space Group

P62c

Cell parameters a (Å)

12.903

Cell parameters b (Å)

-

Cell parameters c (Å)

74.284

Cell parameters a/b or c/a

5.757

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

14

Volume (ų)

10710.44

X-Ray Powder Diffraction

11.18(20),
3.757(20),
3.723(100),
3.488(30),
3.302(60),
2.674(100),
2.651(30),
2.645(30)
XRD chart Sacrofanite

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.75

VHN (Hardness Vickers)

630 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.423 (gemessen)

2.428 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

Italien/Latium (Lazio), Region/Rom, Metropolitanstadt/Sacrofano/Sacrofano-Caldera/Biachella-Tal

Preface

Author (Name, Year)

Burragato & Parodi & Zanazzi, 1980

References

Neues Jahrbuch für Mineralogie, Abhandlungen 140 (1980), 102

IMA group assignments

Other languages

German

Sacrofanit

Spanish

Sacrofanita

French

Sacrofanite

English

Sacrofanite

Russian

Сакрофанит

CNMNC (IMA)-Number

IMA 1979-058

CNMNC symbol

Symbol

Scf

IDs

GUSID (Global unique identifier short form) a45GFypvKkuBd1nEs74bkQ
GUID (Global unique identifier) 17468E6B-6F2A-4B2A-8177-59C4B3BE1B91
Database ID 3355