IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for Educators
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Thermessaite-(NH4)

This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About Thermessaite-(NH4)Hide

Formula:
(NH4)2AlF3(SO4)
NH4 may be replaced by minor K.
Crystal System:
Orthorhombic
Name:
For being the NH4-analogue of thermessaite.
Isostructural with:
The ammonium analogue of thermessaite.

Also originally found as an anthropogenic compound ('Unnamed (NH4-analogue of Thermessaite)') on a burning coal dump at the Anna mine, Aachen (U. Kolitsch, 2010, unpubl. data on material collected by Frank de Wit; subsequently published in Witzke et al., 2015).

This mineral contains linear infinite chains of repeating (AlF3) units, classifying it as a so-called ino-fluoro-aluminate.


Classification of Thermessaite-(NH4)Hide

Approved
Approval Year:
2011

Chemical Properties of Thermessaite-(NH4)Hide

Formula:
(NH4)2AlF3(SO4)

NH4 may be replaced by minor K.

Crystallography of Thermessaite-(NH4)Hide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbcn
Cell Parameters:
a = 11.3005(3) Å, b = 8.6125(3) Å, c = 6.8501(2) Å
Ratio:
a:b:c = 1.312 : 1 : 0.795
Unit Cell V:
666.69 ų (Calculated from Unit Cell)
Morphology:
Acicular.
Comment:
Cell of anthropogenic material: a = 11.286(2), 8.607(2), 6.843(1) A.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
6.850 (74)
5.650 (100)
4.844 (89)
3.082 (47)
3.063 (56)
2.782 (26)
2.681 (28)

Type Occurrence of Thermessaite-(NH4)Hide

Place of Conservation of Type Material:
Type material is deposited in the collections of the C.L. Garavelli Museum in the Dipartimento di Scienze della Terra e Geoambientali, Università degli Studi di Bari ‘‘Aldo Moro’’, Italy, sample number 15/nm-V28.

Synonyms of Thermessaite-(NH4)Hide

Other InformationHide

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 Thermessaite-(NH4)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Garavelli, A., Mitolo, D. and Pinto, D. (2012): Thermessaite-(NH4), IMA 2011-077. CNMNC Newsletter No. 12, February 2012, page 152; Mineralogical Magazine, 76, 151-155.
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. [as anthropogenic phase]
Garavelli, A., Pinto, D., Mitolo, D., Kolitsch, U. (2017): Thermessaite-(NH4): another piece of the puzzle of the evolution of sublimate deposition at “La Fossa” crater fumaroles. Joint SIMP-SGI-AIV-SoGeI 2017 Conference "Geosciences: a tool in a changing world", Pisa, Italy, September 3-6, 2017, Abstract book, 122.

Internet Links for Thermessaite-(NH4)Hide

Localities for Thermessaite-(NH4)Hide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
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.
Italy (TL)
 
  • Sicily
    • Messina Province
      • Eolie Islands (Aeolian Islands)
        • Lipari
          • Vulcano Island
Garavelli, A., Mitolo, D. and Pinto, D. (2012): Thermessaite-(NH4), IMA 2011-077. CNMNC Newsletter No. 12, February 2012, page 152; Mineralogical Magazine, 76, 151-155; Garavelli, A., Pinto, D., Mitolo, D., Kolitsch, U. (2017): Thermessaite-(NH4): another piece of the puzzle of the evolution of sublimate deposition at “La Fossa” crater fumaroles. Joint SIMP-SGI-AIV-SoGeI 2017 Conference "Geosciences: a tool in a changing world", Pisa, Italy, September 3-6, 2017, Abstract book, 122.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 20, 2018 14:04:03 Page generated: October 5, 2018 14:12:45
Go to top of page