Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (2 online) Mindat Auctions

Letovicite

Big Photo

Carola Mine, Freital, Dresden, Saxony, Germany
© Thomas Witzke

Show Letovicite Photos (3)
Formula:
(NH
 
4
)
 
3
H(SO
 
4
)
 
2
System:TriclinicColour:Colourless, white; ...
Hardness:1 - 2
Name:After the type locality, Letovice (Lettowitz), Moravia, Czech Republic.


This species was described and named based on an anthropogenic origin (burning coal mine dumps) but has since been identified in nature.

Classification of Letovicite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:6/A.06-30
Nickel-Strunz 10th (pending) edition ID:7.AD.20

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:28.1.3.1

28 : ANHYDROUS ACID AND NORMAL SULFATES
1 : Anhydrous Acid Sulfates
Hey's CIM Ref.:25.1.9

25 : Sulphates
1 : Sulphates of the alkali metals and ammonium
mindat.org URL:http://www.mindat.org/min-2382.html
Please feel free to link to this page.

Type Occurrence of Letovicite

Type Locality:Vísk, Letovice (Lettowitz), South Moravia Region, Moravia (Mähren; Maehren), Czech Republic
Year of Discovery:1932
Geological Setting of type material:Burning coal mine waste heaps.
Associated Minerals at type locality:
Sulphur

Physical Properties of Letovicite

Diaphaneity (Transparency):Transparent
Colour:Colourless, white; colourless in transmitted light
Hardness (Mohs):1 - 2
Cleavage:Distinct/Good
On {001}.
Fracture:Irregular/Uneven
Density (measured):1.83 g/cm3

Crystallography of Letovicite

Crystal System:Triclinic
Cell Parameters:a = 5.87Å, b = 10.17Å, c = 8.27Å
α = 101.1°, β = 111.1°, γ = 89.9°
Ratio:a:b:c = 0.577 : 1 : 0.813
Unit Cell Volume:V 450.75 ų (Calculated from Unit Cell)
Morphology:Tiny pseudo-hexagonal plates on {001}. Granular massive.
Twinning:Lamellar, common.

Optical Data of Letovicite

Type:Biaxial (-)
RI values: nα = 1.501 nβ = 1.516 nγ = 1.525
2V:Measured: 75° , Calculated: 74°
Maximum Birefringence:δ = 0.024

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 Letovicite

Formula:
(NH
 
4
)
 
3
H(SO
 
4
)
 
2
Essential elements:H, N, O, S
All elements listed in formula:H, N, O, S

Relationship of Letovicite to other Species

Related Minerals - Nickel-Strunz Grouping):
7.AD.05Arcanite
K
 
2
SO
 
4
7.AD.05Mascagnite
(NH
 
4
)
 
2
SO
 
4
7.AD.10Mercallite
KHSO
 
4
7.AD.15Misenite
K
 
8
H
 
6
(SO
 
4
)
 
7
7.AD.25Glauberite
Na
 
2
Ca(SO
 
4
)
 
2
7.AD.30Anhydrite
CaSO
 
4
7.AD.35Anglesite
PbSO
 
4
7.AD.35Baryte
BaSO
 
4
7.AD.35Celestine
SrSO
 
4
7.AD.35Olsacherite
Pb
 
2
SO
 
4
SeO
 
4
7.AD.35Kerstenite
7.AD.40Kalistrontite
K
 
2
Sr(SO
 
4
)
 
2
7.AD.40Palmierite
(K,Na)
 
2
Pb(SO
 
4
)
 
2
Related Minerals - Hey's Index Grouping:
25.1.1Thenardite
Na
 
2
SO
 
4
25.1.2Matteuccite
NaHSO
 
4
·H
 
2
O
25.1.3Mirabilite
Na
 
2
SO
 
4
·10H
 
2
O
25.1.4Arcanite
K
 
2
SO
 
4
25.1.5Mercallite
KHSO
 
4
25.1.6Misenite
K
 
8
H
 
6
(SO
 
4
)
 
7
25.1.7Aphthitalite
(K,Na)
 
3
Na(SO
 
4
)
 
2
25.1.8Mascagnite
(NH
 
4
)
 
2
SO
 
4
25.1.10Ammonioalunite
(NH
 
4
)Al
 
3
[(OH)
 
3
|SO
 
4
]
 
2

Other Names for Letovicite

German names:
Letovicit
Spanish names:
Letovicita

Other Information

Other Information:Readily soluble in water. Volatile.
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 Letovicite

Reference List:Marignac (1857) Annales des mines: 12: 523 (artificial crystals).

Wyrouboff (1880) Bulletin de la Société française de Minéralogie: 3: 209 (artificial crystals).

Gossner (1903) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 38: 158.

Groth, P. (1908) Chemische Krystallographie. Leipzig. 5 volumes: vol. 2: 317 (artificial).

Sekanina (1932) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 83: 117.

American Mineralogist (1933): 18: 180.

Rost (1937) Ak. Česká Roz.: 47(11).

Rost (1938) Neues Jahrbuch für Mineralogie, Geologie und Paleontologie, Heidelberg, Stuttgart: I: 360.

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: 397.

American Mineralogist (1985): 70: 1334.

Acta Crystallographica: B41: 209-213.

Journal of Applied Crystallography (1984): 17: 331-333.

Internet Links for Letovicite

Search Engines:
  • Look for Letovicite on Google
  • Look for Letovicite images on Google
    • External Links:
  • Look for Letovicite on Webmineral
  • Look for Letovicite on Athena Mineralogy
  • Look for Letovicite on Wikipedia
  • Look for Letovicite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Letovicite in the Natural History Museum (London) online catalogue
  • Letovicite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Buy Fine Minerals from mineralsweb.com
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • e-Rocks - Mineral Auctions and Sales
  • The Arkenstone - Fine Minerals
  • Buy Minerals and Crystals from Crystalarium.com
  • rare and unusual minerals mainly crystallized
  • Search for Letovicite on minvision.com
  • Buy from David K Joyce minerals
  • Fine Minerals from Dan Weinrich Minerals
  • Wright's Rock Shop - excellent mineral specimens since 1970
  • Fabre Minerals - search for Letovicite specimens
  • Top quality minerals from Kristalle of California
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to find out how you can sponsor this page.

    Localities for Letovicite

    Hide Locality List
    The 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.
    These maps work faster with Firefox!
    (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
        • Kladno
          • Libušin
    		No reference listed
      • Hradec Králové Region
        • Trutnov (Trautenau)
          • Radvanice
    		Žáček, V., Ondruš, P.: Mineralogy of recently formed sublimates from Kateřina colliery in Radvanice, Eastern Bohemia, Czech Republic. Bulletin of the Czech geological survey, 1998, vol. 73, no. 2, s. 289-302.
    • Moravia (Mähren; Maehren)
      • South Moravia 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: 397.
    Zeitschr.Krist.(1932) 83, 117-122
    Germany
     
    • Saxony
      • Dresden
        • Freital
    		T. Witzke (1995): Neufunde aus Sachsen (IV): Neue Nachweise der seltenen Minerale Chernikovit, Ktenasit, Letovicit, Ramsbeckit, Ravatit und Znucalit. - Lapis 20, 9, 35-36
    Hungary
     
    • Borsod-Abaúj-Zemplén Co.
      • Borsodi Mts.
    USA
     
    • California
      • Sonoma Co.
    		No reference listed
    • Oklahoma
      • Okmulgee Co.
    		Rocks & Minerals: 72(4): 252-264.
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon & Ida Ralph 1993-2008. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.