Alum-(Na)
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About Alum-(Na)
Formula:
NaAl(SO4)2 · 12H2O
Colour:
Colourless
Lustre:
Vitreous
Hardness:
3
Member of:
Name:
The name reflects its sodium content and alum, a hydrous aluminium sulfate.
Classification of Alum-(Na)
Approved, 'Grandfathered' (first described prior to 1959)
6/C.14-10
7.CC.20
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
C : With medium-sized and large cations
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
C : With medium-sized and large cations
29.5.5.2
29 : HYDRATED ACID AND NORMAL SULFATES
5 : AB(XO4)2·xH2O
29 : HYDRATED ACID AND NORMAL SULFATES
5 : AB(XO4)2·xH2O
25.6.14
25 : Sulphates
6 : Sulphates of Al and Tl
25 : Sulphates
6 : Sulphates of Al and Tl
Physical Properties of Alum-(Na)
Chemical Properties of Alum-(Na)
Formula:
NaAl(SO4)2 · 12H2O
Synonyms of Alum-(Na)
Other Language Names for Alum-(Na)
Relationship of Alum-(Na) to other Species
Member of:
Other Members of this group:
Alum-(K) | KAl(SO4)2 · 12H2O | Iso. m3 (2/m 3) : Pa3 |
Lanmuchangite | Tl+Al(SO4)2 · 12H2O | Iso. m3 (2/m 3) : Pa3 |
Tschermigite | (NH4)Al(SO4)2 · 12H2O | Iso. m3 (2/m 3) : Pa3 |
Common Associates
Associated Minerals Based on Photo Data:
Chalcanthite | 1 photo of Alum-(Na) associated with Chalcanthite on mindat.org. |
Related Minerals - Nickel-Strunz Grouping
7.CC. | Cobaltoblödite | Na2Co(SO4)2•4H2O | Mon. 2/m : P21/b |
7.CC. | Andychristyite | PbCu2+Te6+O5(H2O) | Tric. 1 : P1 |
7.CC.05 | Krausite | KFe(SO4)2 · H2O | Mon. 2/m : P21/m |
7.CC.10 | Tamarugite | NaAl(SO4)2 · 6H2O | Mon. 2/m |
7.CC.15 | Kalinite | KAl(SO4)2 · 11H2O | Mon. 2/m : B2/b |
7.CC.15 | Mendozite | NaAl(SO4)2 · 11H2O | Mon. 2/m |
7.CC.20 | Lonecreekite | (NH4)Fe3+(SO4)2 · 12H2O | Iso. |
7.CC.20 | Alum-(K) | KAl(SO4)2 · 12H2O | Iso. m3 (2/m 3) : Pa3 |
7.CC.20 | Tschermigite | (NH4)Al(SO4)2 · 12H2O | Iso. m3 (2/m 3) : Pa3 |
7.CC.20 | Lanmuchangite | Tl+Al(SO4)2 · 12H2O | Iso. m3 (2/m 3) : Pa3 |
7.CC.25 | Voltaite | K2Fe2+5Fe3+3Al(SO4)12 · 18H2O | Iso. m3m (4/m 3 2/m) : Fd3c |
7.CC.25 | Zincovoltaite | K2Zn5Fe3+3Al(SO4)12 · 18H2O | Iso. m3m (4/m 3 2/m) : Fd3c |
7.CC.25 | Pertlikite | K2(Fe2+,Mg)2Mg4Fe3+2Al(SO4)12 · 18H2O | Tet. 4/mmm (4/m 2/m 2/m) : I41/acd |
7.CC.25 | Ammoniomagnesiovoltaite | (NH4)2Mg2+5Fe3+3Al(SO4)12 · 18H2O | Iso. m3m (4/m 3 2/m) : Fd3c |
7.CC.30 | Kröhnkite | Na2Cu(SO4)2 · 2H2O | Mon. 2/m : P21/b |
7.CC.35 | Ferrinatrite | Na3Fe(SO4)3 · 3H2O | Trig. 3 : P3 |
7.CC.40 | Goldichite | KFe(SO4)2 · 4H2O | Mon. 2/m : P21/b |
7.CC.45 | Löweite | Na12Mg7(SO4)13 · 15H2O | Trig. |
7.CC.50 | Blödite | Na2Mg(SO4)2 · 4H2O | Mon. 2/m |
7.CC.50 | Nickelblödite | Na2(Ni,Mg)(SO4)2 · 4H2O | |
7.CC.50 | Changoite | Na2Zn(SO4)2 · 4H2O | Mon. 2/m : P21/b |
7.CC.55 | Leonite | K2Mg(SO4)2 · 4H2O | Mon. 2/m |
7.CC.55 | Mereiterite | K2Fe(SO4)2 · 4H2O | Mon. |
7.CC.60 | Boussingaultite | (NH4)2Mg(SO4)2 · 6H2O | Mon. 2/m : P21/b |
7.CC.60 | Cyanochroite | K2Cu(SO4)2 · 6H2O | Mon. 2/m |
7.CC.60 | Mohrite | (NH4)2Fe(SO4)2 · 6H2O | Mon. 2/m : P21/b |
7.CC.60 | Nickelboussingaultite | (NH4)2Ni(SO4)2 · 6H2O | |
7.CC.60 | Picromerite | K2Mg(SO4)2 · 6H2O | Mon. 2/m |
7.CC.65 | Polyhalite | K2Ca2Mg(SO4)4 · 2H2O | Tric. 1 |
7.CC.70 | Leightonite | K2Ca2Cu(SO4)4 · 2H2O | Tric. |
7.CC.75 | Amarillite | NaFe(SO4)2 · 6H2O | Mon. 2/m : B2/b |
7.CC.80 | Konyaite | Na2Mg(SO4)2 · 5H2O | Mon. 2/m : P21/b |
7.CC.85 | Wattevilleite | Na2Ca(SO4)2 · 4H2O (?) | Orth. |
Related Minerals - Dana Grouping (8th Ed.)
29.5.5.1 | Alum-(K) | KAl(SO4)2 · 12H2O | Iso. m3 (2/m 3) : Pa3 |
29.5.5.3 | Tschermigite | (NH4)Al(SO4)2 · 12H2O | Iso. m3 (2/m 3) : Pa3 |
29.5.5.4 | Lonecreekite | (NH4)Fe3+(SO4)2 · 12H2O | Iso. |
Related Minerals - Hey's Chemical Index of Minerals Grouping
25.6.1 | Rostite | Al(SO4)(OH) · 5H2O | Orth. mmm (2/m 2/m 2/m) |
25.6.2 | Jurbanite | Al(SO4)(OH) · 5H2O | Mon. |
25.6.3 | Khademite | Al(SO4)F · 5H2O | Orth. mmm (2/m 2/m 2/m) |
25.6.4 | Meta-aluminite | Al2(SO4)(OH)4 · 5H2O | |
25.6.5 | Aluminite | Al2(SO4)(OH)4 · 7H2O | Mon. 2/m : P21/b |
25.6.6 | Meta-alunogen | Al2(SO4)3 · 12H2O | |
25.6.7 | Alunogen | Al2(SO4)3 · 17H2O | Tric. 1 |
25.6.8 | Felsőbányaite | Al4(SO4)(OH)10 · 4H2O | Mon. 2 : P21 |
25.6.9 | Basaluminite | Al4(SO4)(OH)10 · 4H2O | Hex. |
25.6.10 | Hydrobasaluminite | Al4(SO4)(OH)10 · 12-36H2O | Mon. |
25.6.11 | Zaherite | Al12(SO4)5(OH)26 · 20H2O | Tric. |
25.6.12 | Tamarugite | NaAl(SO4)2 · 6H2O | Mon. 2/m |
25.6.13 | Mendozite | NaAl(SO4)2 · 11H2O | Mon. 2/m |
25.6.15 | Natroalunite | NaAl3(SO4)2(OH)6 | Trig. 3m : R3m |
25.6.16 | Kalinite | KAl(SO4)2 · 11H2O | Mon. 2/m : B2/b |
25.6.17 | Alum-(K) | KAl(SO4)2 · 12H2O | Iso. m3 (2/m 3) : Pa3 |
25.6.18 | Alunite | KAl3(SO4)2(OH)6 | Trig. 3m : R3m |
25.6.19 | Natroalunite-2c | (Na,Ca0.5,K)Al3(SO4)2(OH)6 | Trig. 3m (3 2/m) : R3m |
25.6.20 | Tschermigite | (NH4)Al(SO4)2 · 12H2O | Iso. m3 (2/m 3) : Pa3 |
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 Alum-(Na)
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Acta Crystallographica (1967): 22: 182.
Internet Links for Alum-(Na)
mindat.org URL:
https://www.mindat.org/min-3703.html
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Localities for Alum-(Na)
Locality List




All localities listed without proper references should be considered as questionable.
Chile | |
| Chukanov, N.V., Aksenov, S.M., Rastsvetaeva, R.K., Möhn, G., Rusakov, V.S., Pekov, I.V., Scholz, R., Eremina, T.A., Belakovskiy, D.I. and Lorenz, J.A. (2016): Magnesiovoltaite K2Mg5Fe3+3Al(SO4)12•18H2O, a new mineral from the Alcaparrosa mine, Antofagasta region, Chile. European Journal of Mineralogy, 28, 1005-1017 |
Germany | |
| No reference listed |
| Van King |
Guatemala | |
| www.excaliburmineral.com/ |
Hungary | |
| Handbook of Mineralogy |
| ACTA MIN. PETR. Suppl. Tomus XXXVIII., 1997 |
Italy | |
| Cossa, A. (1881): Allume potassico dell'isola di Vulcano. In: Ricerche chimiche e microscopiche su roccie e minerali d'Italia (1875-1880). Regia Stazione Agraria Sperimentale di Torino, Tip. V. Bona, Torino, pages 208-221. |
| Campostrini, I., Demartin, F., Gramaccioli, C. M., Russo, M. (2011): Vulcano - Tre secoli di mineralogia. Associazione Micro-mineralogica Italiana, Cremona, 344 pp. |
Lebanon | |
| Kruszewski, Ł., 2018/2019. Secondary sulfate minerals from Bhanine valley coals (South Lebanon) – a crystallochemical and geochemical study. Geological Quarterly (in press) |
Poland | |
| Ciesielczukk, J., Kruszewski, Ł., Fabiańska, M.J., Misz-Kennan, M., Kowalski, A., Mysza, B., 2014: Efflorescences and gas composition emitted from the burning coal-waste dump in Słupiec, Lower Silesian Coal Basin, Poland. Proceedings of the International Symposium CEMC 2014, Skalský Dvůr, April 23-26th, 26-27 |
| Łukasz Kruszewski (2012) Unique chloride assemblage of exhalative origin from burning coal-mining dump in Radlin (Rybnik Coal Area, S Poland). Mineralogical Society of Poland Special Papers 40 |
Russia | |
| Okrugin, V. M. (2004). Miocene to Quaternary center volcanic, hydrothermal and ore-forming activity in the Southern Kamchatka. In Metallogeny of the Pacific Northwest (Russian Far East)-Tectonics, Magmatism and Metallogeny of Active Continental Margin, Interim IAGOD Conference, Excursion Guidebook, Dalnauka, Vladivostok, 2004 (pp. 147-176). |
USA | |
| Hanson, S. L., A. U. Fastner, W. B. Simmons (2008) Mineralogy of the Fumerole deposits at Sunset Crater Volcano National Monument, Northern Arizona. Rocks & Mnerals 83:6 pp 534-544. |
| RRUFF database- specimen I.D R110204 |
| Mineralogical Record March - April 2000 |
Wayne Co., Utah, USA