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Adranosite-(Al)

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Formula:
(NH4)4NaAl2(SO4)4Cl(OH)2
System:
Tetragonal
Name:
After the Greek name of the ancient fire god Adranos (Latin: Adranus) who,according to legend, lived under Mount Etna before being driven out by Hephaestus (Latin: Vulcan). Adranos was worshipped all over Sicily, but particularly in the town of Adranus, now named Adrano.
The Al analogue of Adranosite-(Fe).

Unique combination of elements. One of a few ammonium-sodium sulfates among acmonidesite, adranosite-(Fe), lecontite, möhnite, and therasiasite.

In the crystal structure there are: (1) NaO4Cl2 tetragonal square bipyramids, that have common Cl in corners; (2) AlO6 octahedra and SO4 tetrahedra that join to form spiral chains parallel to [001].


Classification of Adranosite-(Al)

Approved 2008
7.BC.

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
C : With medium-sized and large cations
30.4.5.

30 : ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
4 : Miscellaneous
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Type Occurrence of Adranosite-(Al)

Crystallography of Adranosite-(Al)

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
I41/acd
Cell Parameters:
a = 18.118(3) Å, c = 11.320(3) Å
Ratio:
a:c = 1 : 0.625
Unit Cell Volume:
V 3,715.92 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction Data:
d-spacingIntensity
6.398 (80)
4.530 (86)
3.202 (47)
3.020 (65)
2.980 (100)
2.739 (36)
2.265 (87)
1.902 (44)

Chemical Properties of Adranosite-(Al)

Formula:
(NH4)4NaAl2(SO4)4Cl(OH)2
All elements listed in formula:
Analytical Data:
Chemical analysis in wt.% The empirical formula is based on 19 anions.
Na2O     5.88 
Al2O3   17.40
K2O      0.90
(NH4)2O 16.52
SO3     51.31
Cl       5.68
H2O      2.99
–O=Cl   −1.28

total   99.40
Empirical Formula:
[(NH4)3.89K0.12]∑4.01Na1.16Al2.09S3.93O15.99Cl0.98(OH)2.03
Common Impurities:
K

Other Names for Adranosite-(Al)

Name in Other Languages:
German:Adranosit

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Adranosite-(Al)

Reference List:
Ciriotti, M.E., Fascio, L. & Pasero, M. (2009) Italian Type Minerals. Edizioni Plus, Università di Pisa, Pisa, Italy, 357 pp.

Demartin, F., Gramaccioli, C.M., Campostrini, I. (2010) Adranosite, (NH4)4NaAl2(SO4)Cl(OH)2, a new ammonium sulfate chloride from La Fossa crater, Vulcano, Aeolian Islands, Italy. Canadian Mineralogist, 48, 315-321.

Internet Links for Adranosite-(Al)

Localities for Adranosite-(Al)

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Germany
 
  • North Rhine-Westphalia
    • Aachen
      • Alsdorf
Witzke, T., de Wit, F., Kolitsch, U. and Blaß, G. (2015): Mineralogy of the Burning Anna I Coal Mine Dump, Alsdorf, Germany. Chapter 7, pp. 203-240, in: Stracher, G. B., Prakash, A. and Sokol, E. V.: Coal and Peat Fires: A Global Perspective, Volume 3: Case Studies - Coal Fires, Elsevier, 786 pp.
Hungary
 
  • Baranya Co.
    • Mecsek Mts
      • Pécs
Szabó, D., Lovász, A., Weiszburg, T., Szakáll, S., Kristály, F. (2015): Ammonioalunite and adranosite-Al. New mineral species from the burning coal dumps of Pécs-Vasas, Hungary. Poster session presented at: 6th Mineral Sciences in the Carpathians Conference; 2015 May 16-19; Veszprém, Hungary.
Italy (TL)
 
  • Sicily
    • Messina Province
      • Eolie Islands (Aeolian Islands)
        • Lipari
          • Vulcano Island
Demartin, F., Gramaccioli, C.M., Campostrini, I. (2010): Adranosite, (NH4)4NaAl2(SO4)Cl(OH)2, a new ammonium sulfate chloride from La Fossa crater, Vulcano, Aeolian Islands, Italy. Canadian Mineralogist, 48, 315-321.
Mineral and/or Locality  
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