SUPPORT US. Covid-19 has significantly affected our fundraising. Please help!
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 EducatorsMindat ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography


This page is currently not sponsored. Click here to sponsor this page.
Frederick E. Teschemacher
Colourless, white, light yellow; colourless in transmitted light.
Crystal System:
Named in honor of Frederick Edward Teschemacher (31 December 1791, Clarborough, Eastretford, Nottinghamshire, England - 10 January 1863, Highbury Park North, Middlesex, England), chemist who first described the mineral.
This page provides mineralogical data about Teschemacherite.

Hide all sections | Show all sections

Classification of TeschemacheriteHide

Approved, 'Grandfathered' (first described prior to 1959)

A : Carbonates without additional anions, without H2O
A : Alkali carbonates

1 : Miscellaneous

11 : Carbonates
1 : Carbonates of the alkali metals and ammonium

Physical Properties of TeschemacheriteHide

Colourless, white, light yellow; colourless in transmitted light.
1½ on Mohs scale
On {110}.

Optical Data of TeschemacheriteHide

Biaxial (-)
RI values:
nα = 1.423 nβ = 1.536 nγ = 1.555
Measured: 41° , Calculated: 40°
Max Birefringence:
δ = 0.132
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
relatively strong

Chemical Properties of TeschemacheriteHide

IMA Formula:

Crystallography of TeschemacheriteHide

Crystal System:
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Cell Parameters:
a = 7.25 Å, b = 10.7 Å, c = 8.74 Å
a:b:c = 0.678 : 1 : 0.817
Unit Cell V:
678.01 ų (Calculated from Unit Cell)
Compact crystalline masses. Crystals short prismatic (artificial material).

Crystal StructureHide

Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
CIF File    Best | x | y | z | a | b | c
Stop | Start
Console Off | On | Grey | Yellow
IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0015683TeschemacheritePertlik F (1981) Verfeinerung der kristallstruktur des teschemacherits, (NH4)CO2(OH) Tschermaks Mineralogische und Petrographische Mitteilungen 29 67-7419810293
CIF Raw Data - click here to close

Type Occurrence of TeschemacheriteHide

Synonyms of TeschemacheriteHide

Other Language Names for TeschemacheriteHide

Related Minerals - Nickel-Strunz GroupingHide

5.AA.05ZabuyeliteLi2CO3Mon. 2/m : B2/b
5.AA.15NahcoliteNaHCO3Mon. 2/m
5.AA.20KaliciniteKHCO3Mon. 2/m
5.AA.30WegscheideriteNa5H3(CO3)4Tric. 1 : P1

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

11.1.1ZabuyeliteLi2CO3Mon. 2/m : B2/b
11.1.3NahcoliteNaHCO3Mon. 2/m
11.1.4WegscheideriteNa5H3(CO3)4Tric. 1 : P1
11.1.5ThermonatriteNa2CO3 · H2OOrth. mmm (2/m 2/m 2/m) : Pmmm
11.1.6TronaNa3H(CO3)2 · 2H2OMon. 2/m
11.1.7NatronNa2CO3 · 10H2OMon. 2/m : P2/m
11.1.8KaliciniteKHCO3Mon. 2/m
11.1.9ShortiteNa2Ca2(CO3)3Orth. mm2 : Amm2
11.1.10NyerereiteNa2Ca(CO3)2Orth. mmm (2/m 2/m 2/m) : Cmcm
11.1.13PirssoniteNa2Ca(CO3)2 · 2H2OOrth. mm2 : Fdd2
11.1.14GaylussiteNa2Ca(CO3)2 · 5H2OMon. 2/m : B2/b
11.1.15BaylissiteK2Mg(CO3)2 · 4H2OMon.
11.1.16FairchilditeK2Ca(CO3)2Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
11.1.17BütschliiteK2Ca(CO3)2Trig. 3m (3 2/m) : R3m

Other InformationHide

Slowly decomposes in humid atmosphere. Soluble in water. Soluble with effervescence in dilute acid.
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 TeschemacheriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Rose (1839) Annalen der Physik, Halle, Leipzig: 46: 401.
Teschemacher (1846) Philosophical Magazine and Journal of Science: 28: 548 (as Bicarbonate of Ammonia).
Ulex (1847) Annalen der Physik, Halle, Leipzig: 61: 44.
Schiff (1858) Annalen der Physik, Halle, Leipzig: 107: 64.
Lang (1862) Konigliche Akademie der Wissenschaften, Vienna, Sitzber: 45(II): 112.
Dana, J.D. (1868) System of Mineralogy, 5th. Edition, New York: 705.
Hintze, Carl (1889) Handbuch der Mineralogie. Berlin and Leipzig. 6 volumes: 1 [3A]: 2751.
Goldschmidt, V. (1922) Atlas der Krystallformen. 9 volumes, atlas, and text, vol. 8: 123.
Mellor, J.W. (1922) A Comprehensive Treatise on Inorganic and Theoretical Chemistry. 16 volumes, London: 2: 787.
Mooney (1932) Physical Review, a Journal of Experimental and Theoretical Physics: 39: 861.
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: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 137-138.
American Mineralogist (1972): 57: 1304.
Tschermaks Mineralogische und Petrographische Mitteilungen: 29: 67-74.

Internet Links for TeschemacheriteHide

Localities for TeschemacheriteHide

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.
Ulex, G. L. (1848): Ueber naturliches zweifach-kohlensaures ammoniak. Ann. Chim. 66, 44-45.
New Zealand
  • Waikato Region
    • Taupo District
Browne, P.R.L (1972) Occurrence of Teschemacherite in a Geothermal Well at Broadlands, New Zealand. American Mineralogist, 57:7-8, 1304-1305.
  • Ica
    • Pisco Province
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: 137.
  • La Libertad
    • Virù Province
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: 137.
South Africa (TL)
  • Western Cape
    • West Coast District Municipality
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: 137; American Mineralogist (1972): 57: 1304.
Mineral and/or Locality  
Mindat Discussions Facebook Logo Instagram Logo Discord Logo is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © and the Hudson Institute of Mineralogy 1993-2020, except where stated. Most political location boundaries are © OpenStreetMap contributors. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: November 30, 2020 08:53:57 Page generated: November 17, 2020 15:36:01
Go to top of page