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Mascagnite

Formula:
(NH
 
4
)
 
2
SO
 
4
System: Orthorhombic Colour: Colourless, grey, ...
Lustre: Vitreous, Dull Hardness: 2 - 2½
Name: After Paolo Mascagni (1755-1815), Professor of Anatomy, University of Siena, who first described the natural material.


Mascagnite-Arcanite Series. Slightly hygroscopic.

Occurs at active volcanic fumaroles, hot springs, and on burning coal mine dumps.

Classification of Mascagnite

IMA status: Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Nickel-Strunz 10th (pending) edition ID: 7.AD.05

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
A : Sulfates (selenates, etc.) without additional anions, without H2O
D : With only large cations
Dana 8th edition ID: 28.2.1.1

28 : ANHYDROUS ACID AND NORMAL SULFATES
2 : A2XO4
Hey's CIM Ref.: 25.1.8

25 : Sulphates
1 : Sulphates of the alkali metals and ammonium
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Physical Properties of Mascagnite

Lustre: Vitreous, Dull
Diaphaneity (Transparency): Transparent, Translucent, Opaque
Colour: Colourless, grey, yellowish-grey, yellow; colourless in transmitted light
Hardness (Mohs): 2 - 2½
Tenacity: Sectile
Cleavage: Distinct/Good
On {001}.
Parting: Twin gliding with K1(110), K2(13¯0).
Fracture: Irregular/Uneven
Density (measured): 1.768 g/cm3
Density (calculated): 1.765 g/cm3

Crystallography of Mascagnite

Crystal System: Orthorhombic
Class (H-M): mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters: a = 7.78Ã…, b = 5.99Ã…, c = 10.63Ã…
Ratio: a:b:c = 1.299 : 1 : 1.775
Unit Cell Volume: V 495.38 ų (Calculated from Unit Cell)
Morphology: Well-formed natural crystals are rare. Mealy crusts and stalactitic forms. Artificial crystals equant to short prismatic [001], frequently flattened {010}; also prismatic [100]; also flattened {100}, rare.
Twinning: On {110} common, often repeated yielding a pseudo-hexagonal habit; also polysynthetic.

Optical Data of Mascagnite

Type: Biaxial (+)
RI values: nα = 1.520 nβ = 1.523 nγ = 1.533
2V: Measured: 52° , Calculated: 58°
Maximum Birefringence: δ = 0.013
[image]
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief: Low
Dispersion: relatively strong

Chemical Properties of Mascagnite

Formula:
(NH
 
4
)
 
2
SO
 
4
Essential elements: H, N, O, S
All elements listed in formula: H, N, O, S

Relationship of Mascagnite to other Species

Series: Forms a series with Arcanite (see here)
Related Minerals - Nickel-Strunz Grouping):

- +
7.AD.05 Arcanite
K
 
2
SO
 
4
7.AD.10 Mercallite
KHSO
 
4
7.AD.15 Misenite
K
 
8
H
 
6
(SO
 
4
)
 
7
7.AD.20 Letovicite
(NH
 
4
)
 
3
H(SO
 
4
)
 
2
7.AD.25 Glauberite
Na
 
2
Ca(SO
 
4
)
 
2
7.AD.30 Anhydrite
CaSO
 
4
7.AD.35 Anglesite
PbSO
 
4
7.AD.35 Baryte
BaSO
 
4
7.AD.35 Celestine
SrSO
 
4
7.AD.35 Olsacherite
Pb
 
2
SO
 
4
SeO
 
4
7.AD.40 Kalistrontite
K
 
2
Sr(SO
 
4
)
 
2
7.AD.40 Palmierite
(K,Na)
 
2
Pb(SO
 
4
)
 
2
Related Minerals - Hey's Index Grouping:

- +
25.1.1 Thenardite
Na
 
2
SO
 
4
25.1.2 Matteuccite
NaHSO
 
4
·H
 
2
O
25.1.3 Mirabilite
Na
 
2
SO
 
4
·10H
 
2
O
25.1.4 Arcanite
K
 
2
SO
 
4
25.1.5 Mercallite
KHSO
 
4
25.1.6 Misenite
K
 
8
H
 
6
(SO
 
4
)
 
7
25.1.7 Aphthitalite
(K,Na)
 
3
Na(SO
 
4
)
 
2
25.1.9 Letovicite
(NH
 
4
)
 
3
H(SO
 
4
)
 
2
25.1.10 Ammonioalunite
(NH
 
4
)Al
 
3
[(OH)
 
3
|SO
 
4
]
 
2

Other Names for Mascagnite

Other Information

Thermal Behaviour: Melts when heated in air and decomposes at a low temperature.
Other Information: Slightly hygroscopic. Soluble in water.
Health Warning: No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Mascagnite

Reference List: Sage, B.G. (1777) Eléméns de minéralogie docimastique, second edition, 2 volumes: 1: 62 (as Sel ammoniac vitriolique).

Mascagni (1779) Dei Lagoni del Senese..., Sienna: 36 (as Sale ammoniacale composto d'acido sulfureo)



Haüy, R.J. (1822) Traité de minéralogie, second edition, 4 volumes, with fol. Atlas: 2: 220 (as Ammoniaque sulfatée).

Mitscherlich (1830) Annalen der Physik, Halle, Leipzig: 18: 169 (artificial crystals).

Tutton (1904) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 38: 602.

Groth, P. (1908) Chemische Krystallographie. Leipzig. 5 volumes: vol. 2: 322.

Fischer (1911) Neues Jahrbuch für Mineralogie, Geologie und Paleontologie, Heidelberg, Beil.-Bd., Stuttgart: 32: 1.

Goldschmidt, V. (1920) Atlas der Krystallformen. 9 volumes, atlas, and text, vol. 6: 10.

Ogg (1928) Philosophical Magazine and Journal of Science: 5: 354.

Taylor and Boyer (1928) Memoires of the Manchester Literary and Philosophical Society: 72: 125.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 398-399.

Journal of the Physical Society of Japan: 50: 1266-1274.

Periodico di Mineralogia (1985): 54: 32.
Karsten, D.L.G. (1800) Mineralogische Tabellen, Berlin. First edition: 40, 75 (as Maskagnin).

Articles/Blogs about Mascagnite

Internet Links for Mascagnite

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Localities for Mascagnite

The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the [image] symbol to view information about a locality. The [image] symbol next to localities in the list can be used to jump to that position on the map.
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(TL) indicates type locality. ? 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.
Czech Republic
 
Bohemia (Böhmen; Boehmen)
Central Bohemia Region
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 399.
Libušin
No reference listed
David Parfitt collection
Hradec Králové Region
Trutnov (Trautenau)
Radvanice
ŽáÄek, V., OndruÅ¡, P.: Mineralogy of recently formed sublimates from KateÅ™ina colliery in Radvanice, Eastern Bohemia, Czech Republic. Bulletin of the Czech geological survey, 1998, vol. 73, no. 2, s. 289-302.
Ústí Region
Bílina (Bilin)
BouÅ¡ka, V., Dvořák, Z.: Nerosty severoÄeské hÄ›ndouhelné pánve. Praha: SeveroÄeské doly, a.s., 160 s.
Moravia (Mähren; Maehren)
South Moravia Region
Handbook of Mineralogy
Democratic Republic of Congo (Zaïre)
 
Kivu
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 399, 476.
France
 
Auvergne
Allier
Montluçon
Commentry
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 399.
Germany
 
Baden-Württemberg
Black Forest
Wolfach
Oberwolfach
Rankach valley
Walenta, K. (1992): Die Mineralien des Schwarzwaldes. Chr. Weise Verlag, München, 336 pp. (in German)
North Rhine-Westphalia
Aachen
Alsdorf
Sindern, S., Warnsloh, J. M., Witzke, T., Havenith, V., Neef, R. & Etoundi, Y. (2005): Mineralogy and geochemistry of vents formed on the burning coal mining waste dump Anna I, Alsdorf, Germany. Eur. J. Mineral. 17, Beih. 1, 130.
Saxony
Dresden
Freital
Thalheim, K.; Reichel, W. & Witzke, T. (1991): Die Minerale des Döhlener Beckens.- Schriften des Staatlichen Museums für Mineralogie und Geologie zu Dresden, Nr. 3
Thuringia
Gera
Ronneburg U deposit
T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64
Hungary
 
Baranya Co.
Mecsek Mts.
Komló
Mineral Species of Hungary, 2005
Borsod-Abaúj-Zemplén Co.
Borsodi Mts.
Múcsony
Szakáll & Jánosi: Minerals of Hungary
Bükk Mts.
Miskolc
Szakáll & Jánosi: Minerals of Hungary, 1995
Komárom-Esztergom Co.
Pilisi Basin
Esztergom
ACTA MIN. PETR. Suppl. Tomus XXXVIII., 1997
Veszprém Co.
Bakony Mts.
Ajka
Szakáll & Jánosi: Minerals of Hungary, 1995
Várpalota
ACTA MIN. PETR. Suppl. Tomus XXXVIII., 1997
Italy
 
Campania
Naples Province
Somma-Vesuvius Complex
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 399; Russo, M., 2006: I minerali di formazione fumarolica della grande eruzione vesuviana del 1906
Phlegrean Volcanic Complex
Naples Province
Phlegrean Fields
Pozzuoli
De Michele, V. (1974). Guida mineralogica d'Italia. Istituto Geografico De Agostini, Novara, 2 vol
Sicily
Catania Province
Etna Volcanic Complex
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 399.
Messina Province
Lipari
Eolie Islands (Aeolian Islands)
Vulcano Island
BOMBICCI L. (1875): Corso di mineralogia. - Bologna, 347.
Netherlands
 
Limburg
Kerkrade
Peru
 
La Libertad Department
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 399,1104.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 399.
Russia
 
Urals Region
Chelyabinsk Oblast'
Chelyabinsk coal basin
Kopeisk
Slovakia
 
Banská Bystrica Region
Krupinská planina
Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
Tajikistan
 
Viloyati Sogd (Viloyati Sughd; Viloyati Khodzhent; Viloyati Leninabad)
Gissar Range
Fan-Yagnob Basin
No reference listed
UK
 
England
Staffordshire
Stafford
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 399.
Scotland
Lothian (Mid Lothian)
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 399.
USA
 
California
Sonoma Co.
Palache et al (1951), Dana's System of Mineralogy, seventh ed., vol. II: 399.
Missouri
Pettis Co.
R&M 73:2 pp 98-117
Pennsylvania
Columbia Co.
Schuylkill Co.
American Mineralogist (1977): 62: 316-320.
Shenandoah
Reed, Juliet C. (1976), Annotated Biblio. of Minerals New to the Pennsylvania List 1965-1974, The Mineralogical Soc. of PA, Inc.: 55-56; Barnes, John H. & Lahham, Davis M. (1971), "Rare Minerals Found in PA," PA. Geol., Vol. 2(5):7-8;
Google
 
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