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Alloriite

Pictures (3 Images total)

Alloriit
Views (Image: 1344810701): 851
Alloriit

Kristallgröße: 0,15 mm, Fundort: Mt Cavalluccio, Sacrofano Caldera, Latium, Italien

Copyright: Luigi Mattei
Contribution: thdun5 2012-08-13
Locality: Mt. Cavalluccio / Sacrofano-Caldera / Sacrofano / Rom, Provinz / Latium (Lazio), Region / Italien
blockiger farbloser Alloriit
Views (Image: 1598449882): 168
blockiger farbloser Alloriit (SNr: A043047)

Italien/Latium (Lazio), Region/Rom, Provinz/Sacrofano/Sacrofano-Caldera/Mt. Cavalluccio, BB = 1,9 mm

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2020-08-26
Locality: Mt. Cavalluccio / Sacrofano-Caldera / Sacrofano / Rom, Provinz / Latium (Lazio), Region / Italien
Alloriit
Views (Image: 1271681273): 5732
Alloriit

Bildbreite: 2 mm, Fundort: Mt Cavalluccio, Sacrofano Caldera, Latium, Italien

Copyright: Luigi Chiappino
Contribution: thdun5 2010-04-19
Locality: Mt. Cavalluccio / Sacrofano-Caldera / Sacrofano / Rom, Provinz / Latium (Lazio), Region / Italien

Collectors Summary

Color farblos, oder blassviolett
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 5
Cleavages unvollkommen (10-10)
Fracture muschelig
Crystal System trigonal, P31c
Morphology Bildet kurzprismatische, isometrische, sowie taflige Kristalle bis 1,5x2,0 mm.

Chemism

Chem­ical formula

(Na,K,Ca)24(Na,Ca)4Ca4(Si,Al)48O96(SO4)4(SO3,CO3)2(OH,Cl)2(H2O,OH)4

Chem­ical com­po­si­tion

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

Unit weight: 4497.55692638 u; Number of atoms in the formula: 218.5

Info

Empirical formula:

(Na0.6K0.3Ca0.1)24(Na0.75Ca0.25)4Ca4(Si0.75Al0.25)48O96(SO4)4((SO3)0.75(CO3)0.25)2((OH)0.75Cl0.25)2((H2O)0.75(OH)0.25)4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.19

8.5

3.89

1.0079470

8.5675495

Carbon

C

0.13

0.5

0.23

12.0107800

6.0053900

Oxygen

O

43.93

123.5

56.52

15.9994300

1,975.9296050

Sodium

Na

8.89

17.4

7.96

22.9897702

400.0220015

Aluminium

Al

7.20

12

5.49

26.9815382

323.7784584

Silicon

Si

22.48

36

16.48

28.0855300

1,011.0790800

Sulfur

S

3.92

5.5

2.52

32.0655000

176.3602500

Chlorine

Cl

0.39

0.5

0.23

35.4532000

17.7266000

Potassium

K

6.26

7.2

3.30

39.0983100

281.5078320

Calcium

Ca

6.59

7.4

3.39

40.0784000

296.5801600

Anal­y­sis wt%

SO3 : 8.92, SiO2 : 34.64, CO2 : 0.70, Al2O3 : 26.45, CaO : 6.23, Na2O : 13.55, K2O : 6.67, H2O : 2.10 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 2007)

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.09-048

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

Clas­sifica­tion by Hölzel

9.FE.640

9: SILICATES
F: Tektosilicates
E: Hexagonal or trigonal with other Anions
6: Afghanite-Group - trigonal, axis a~~12A and c=n*~~5A, n=1-5

IMA sta­tus

anerkannt 2006

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

farblos, oder blassviolett

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent

Lus­tre

Glasglanz

max. Birefrin­gence

0.002

Birefringence chart\! Alloriite title=Birefringence chart Alloriite

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

1.497

RI value γ / ε

1.499

Ri mean

1.498

2V angle

Uniaxial (+)

Absorp­tion

E > O

Pleochro­ism

E = blassrosa, O = blass rosa gelb

Crystallography

Crystal Sys­tem

trigonal

Class (H-M)

3m

Space Group number

159

Space Group

P31c

Cell param­e­ters a (Å)

12.892

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

21.340

Cell param­e­ters a/b or c/a

1.655

Cell param­e­ters c/b

-

Z

1

Volumne (ų)

3071.607

X-Ray Pow­der Diffrac­tion

11.3(70), 4.85(90), 4.03(60), 3.76(80), 3.68(70), 3.33(100), 2.795(60), 2.694(70)

XRD chart Alloriite

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

Morphol­ogy

Bildet kurzprismatische, isometrische, sowie taflige Kristalle bis 1,5x2,0 mm.

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

5

VHN (Hard­ness Vick­ers)

390 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.371 (berechnet)

2.431 ( ρ calc. Mineralienatlas )

Cleav­ages

unvollkommen (10-10)

Frac­ture

muschelig

Tenac­ity

spröde

(Co-)Type locality

(Co-)Type locality

Italien/Latium (Lazio), Region/Rom, Provinz/Sacrofano/Sacrofano-Caldera/Mt. Cavalluccio

Type mate­r­ial

A. E. Fersman Mineralogical Museum, Academy of Sciences, Moskau, Russland

Col­lec­tion number of type mate­r­ial

3459/1

Preface

Name from

Roberto Allori (Amateurmineraloge und Sammler)

Addi­tional Informa­tion

Das Sulfit-Analogon zu Alloriit wurde beschrieben, jedoch nicht als neues Mineral gelistet.

N. V. Chukanov, N. V. Zubkova, I. V. Pekov, G. Giester, D. Yu. Pushcharovsky: Sulfite Analogue of Alloriite from Sacrofano, Latium, Italy: Crystal Chemistry and Specific Features of Genesis. Geology of Ore Deposits Vol. 63, Nr. 8 (2021) S. 793–804.

References

Mineralien Welt 04/08, Steffen Jahn, Die neuen Mineralien 2007 - 2008

Zapiski Rossiyskogo Mineralogicheskogo Obshchetstva 136(1) (2007), 82

Doklady Akademii Nauk 415(2) (2007), 242

Other languages

German

Alloriit

English

Alloriite

Russian

Аллориит

CNMNC (IMA)-Number

IMA 2006-020

CNMNC symbol

Symbol

Aor

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Аллориит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Alloriit
Crystal-Treasure.com - search for: Alloriit
Bosse - search for: Alloriit
Edelsteine Neuburg - Gundolf Fischer - search for: Alloriit