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Steudelite

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Steudelit
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Steudelit
farbloses Aggregat von Steudelit, Biachella-Tal, Sacrofano-Caldera, Lazio, Italien; BB < 1 mm, analysiert
Copyright: mintreasure.com; Contribution: openpit
Location: Italien/Latium (Lazio), Region/Rom, Metropolitanstadt/Sacrofano/Sacrofano-Caldera/Biachella-Tal
Mineral: Steudelite
Image: 1665337083
License: Usage for Mineralienatlas project only
Steudelit

farbloses Aggregat von Steudelit, Biachella-Tal, Sacrofano-Caldera, Lazio, Italien; BB < 1 mm, analysiert
Copyright: mintreasure.com
Contribution: openpit 2022-10-09
Locality: Biachella-Tal / Sacrofano-Caldera / Sacrofano / Rom, Metropolitanstadt / Latium (Lazio), Region / Italien

Collectors Summary

Hardness (Mohs) 5
Cleavages vollkommen nach {0001}
Crystal System hexagonal, P62c
Morphology farblose, dicktafelige, isometrische und kurzprismatische Kristalle, bis 7 mm groß

Chemism

Chemical formula

Na3(K17Ca7)Ca4(Al24Si24O96)(SO3)6F6·4H2O

Empirical formula (analysis)

H8.22Na11.06K8.28Ca11.18(Al24.04Fe3+0.10Si23.86O96)(SO3)3.43(SO4)3.00F4.04Cl1.10O3.8

Chemical composition

Aluminium, Calcium, Natrium, Silicium, Fluor, Kalium, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 4634.00778851 u; Number of atoms in the formula: 220.4

Info

Empirical formula:

H8.22Na11.06K8.28Ca11.18(Al24.04Fe0.10Si23.86O96)(SO3)3.43(SO4)3.00F4.04Cl1.10O3.8

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.18

8.22

3.73

1.0079470

8.2853243
Oxygen

O

42.15

122.09

55.39

15.9994300

1,953.3704087
Fluorine

F

1.66

4.04

1.83

18.9984033

76.7535491
Sodium

Na

5.49

11.06

5.02

22.9897702

254.2668584
Aluminium

Al

14.00

24.04

10.91

26.9815382

648.6361783
Silicon

Si

14.46

23.86

10.83

28.0855300

670.1207458
Sulfur

S

4.45

6.43

2.92

32.0655000

206.1811650
Chlorine

Cl

0.84

1.1

0.50

35.4532000

38.9985200
Potassium

K

6.99

8.28

3.76

39.0983100

323.7340068
Calcium

Ca

9.67

11.18

5.07

40.0784000

448.0765120
Iron

Fe

0.12

0.1

0.05

55.8452000

5.5845200

IMA status

anerkannt - CNMNC Newsletter 61, April - Mai 2021

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Cancrinit–Sodalit supergroup  ⇒ Cancrinite Group

Crystallography

Crystal System

hexagonal

Class (H-M)

6m2

Space Group number

190

Space Group

P62c

Cell parameters a (Å)

12.89529(15)

Cell parameters b (Å)

-

Cell parameters c (Å)

21.2778 (3)

Cell parameters a/b or c/a

1.65

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

1

Volume (ų)

3064.217

Crystal structure

Cancrinit-Gruppe; Struktur ermittelt

X-Ray Powder Diffraction

11.15(28), 4.799(25), 3.973(16), 3.721(47), 3.305(100), 2.661(17), 2.471(14), 2.149(21)
XRD chart Steudelite

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

Morphology

farblose, dicktafelige, isometrische und kurzprismatische Kristalle, bis 7 mm groß

Physical Properties

Hardness (Mohs)

5

Density (g/cm³)

2.51(1) gem. 2.511 ber.

2.511 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen nach {0001}

(Co-)Type locality

(Co-)Type locality

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

Type material

Das Typmaterial ist in den Sammlungen des Fersman Mineralogischen Museums, Russische Akademie der Wissenschaften, Leninskiy Prospekt 18-2, Moskau 119071, Russland, Registriernummer 5665 hinterlegt.

Paragenesis of type material

Sanidin, Diopsid, Andradit, Biotit, Leucit, Haüyn, Sacrofanit, Biachellait, Liottit, "sekundär dioctahedral" Smektit

Preface

Name from

Prof. Ralf Steudel (1937–2021), deutscher Chemiker, Spezialist für die Chemie des Schwefels.

Author (Name, Year)

Nikita V. Chukanov, Natalia V. Zubkova, Dmitry A. Varlamov, Igor V. Pekov, Dmitry I. Belakovskiy, Sergey N. Britvin, Konstantin V. Van, Vera N. Ermolaeva, Svetlana A. Vozchikova, und Dmitry Y. Pushcharovsky (2022)

References

Chukanov, N. V., Zubkova, N. V., Varlamov, D. A., Pekov, I. V., Belakovskiy, D. I., Britvin, S. N., Van, K. V., Ermolaeva, V. N., Vozchikova, S. A., and Pushcharovsky, D. Y.: Steudelite, IMA 2021-007, in: CNMNC Newsletter 61, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-299-2021, 2021.

Nikita V. Chukanov, Natalia V. Zubkova, Dmitry A. Varlamov, Igor V. Pekov, Dmitry I. Belakovskiy, Sergey N. Britvin, Konstantin V. Van, Vera N. Ermolaeva, Svetlana A. Vozchikova, Dmitry Yu. Pushcharovsky: Steudelite, (Na3☐)[(K,Na)17Ca7]Ca4(Al24Si24O96)(SO3)6F6·4H2O, a new cancrinite-group mineral with afghanite-type framework topology. Physics and Chemistry of Minerals Vol. 49, Nr. 1 (2022) Art.-Nr. 1.

Celestian, Aaron J.: New Mineral Names: Hydrous Minerals. American Mineralogist Volume 107 (2022) S.1656–1658.

IMA group assignments

 
Cancrinit–Sodalit supergroup
 
 
 

 
 
Cancrinite Group
 
 
 

 
 
 
Betzite
Na6Ca2(Al6Si6O24)Cl4
hexagonal
P63

 
 
 
Cancrinite Subgroup
 
 
 

 
 
 
 
Cancrinite
Na6Ca2Al6Si6O24(CO3)2
hexagonal
P63

 
 
 
 
Cancrisilite
Na7Al5Si7O24(CO3)·3H2O
hexagonal
P63mc

 
 
 
 
Hydroxycancrinite
(Na,Ca,K)8(Al6Si6O24)(OH,CO3)2·2H2O
hexagonal
P63

 
 
 
 
Pitiglianoite
Na6K2Si6Al6O24(SO4)·2H2O
hexagonal
P63

 
 
 
 
Vishnevite
Na8(Al6Si6)O24(SO4)·2H2O
hexagonal
P63

 
 
 
Davyne Subgroup
 
 
 

 
 
 
 
Balliranoite
(Na,K)6Ca2(Si6Al6O24)Cl2(CO3)
hexagonal
P63

 
 
 
 
Davyne
[(Na,K)6(SO4)0.5Cl][Ca2Cl2][(Si6Al6O24)]
hexagonal
P63

 
 
 
 
Microsommite
(Na,Ca,K)7-8(Si,Al)12O24(Cl,SO4,CO3)2-3
hexagonal
P63

 
 
 
 
Quadridavyne
(Na,K)6Ca2(Cl4)(Al6Si6O24)
hexagonal
P63/m

 
 
 
Steudelite
Na3(K17Ca7)Ca4(Al24Si24O96)(SO3)6F6·4H2O
hexagonal
P62c

 
 
 
Sulfhydrylbystrite
Na5K2Ca[Al6Si6O24](S5)2-(SH)-
trigonal
P31c

 
 
 
Tiptopite
K2(Na,Ca)2Li3Be6(PO4)6(OH)2·H2O
hexagonal
P63

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Actuality: 20. Mar 2025 - 18:03:07

Other languages

German

Steudelit

English

Steudelite

CNMNC (IMA)-Number

IMA 2021-007

IDs

GUSID (Global unique identifier short form) C-Gw84N45kiTUkcC4QkEuA
GUID (Global unique identifier) F3B0E10B-7883-48E6-9352-4702E10904B8
Database ID 9040