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Teschemacherite

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Frederick E. Teschemacher
Formula:
(NH4)HCO3
Colour:
Colourless, white, light yellow; colourless in transmitted light.
Hardness:
Crystal System:
Orthorhombic
Name:
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)
5.AA.25

5 : CARBONATES (NITRATES)
A : Carbonates without additional anions, without H2O
A : Alkali carbonates
13.1.3.1

13 : ACID CARBONATES
1 : Miscellaneous
11.1.18

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

Physical Properties of TeschemacheriteHide

Transparency:
Transparent
Colour:
Colourless, white, light yellow; colourless in transmitted light.
Hardness:
1½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
On {110}.

Optical Data of TeschemacheriteHide

Type:
Biaxial (-)
RI values:
nα = 1.423 nβ = 1.536 nγ = 1.555
2V:
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:
Low
Dispersion:
relatively strong

Chemical Properties of TeschemacheriteHide

Formula:
(NH4)HCO3
IMA Formula:
(NH4)H(CO3)

Crystallography of TeschemacheriteHide

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

Type Occurrence of TeschemacheriteHide

Geological Setting of Type Material:
In a guano deposit.

Synonyms of TeschemacheriteHide

Other Language Names for TeschemacheriteHide

Related Minerals - Nickel-Strunz GroupingHide

5.AA.05ZabuyeliteLi2CO3Mon. 2/m : B2/b
5.AA.10NatriteNa2CO3Mon.
5.AA.10Gregoryite(Na2,K2,Ca)CO3Hex.
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
11.1.2NatriteNa2CO3Mon.
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
11.1.11NatrofairchilditeNa2Ca(CO3)2Orth.
11.1.12ZemkoriteNa2Ca(CO3)2Hex.
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

Notes:
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.
Argentina/Chile
 
  • Patagonia
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.
Azerbaijan
www.azer.com/aiweb/categories/magazine/32_folder/32_articles/32_minerals.html.
New Zealand
 
  • North Island
    • 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.
Peru
 
  • 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
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  
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