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Bütschliite

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About BütschliiteHide

Johann Adam Otto Bütschli
Formula:
K2Ca(CO3)2
Colour:
Grayish yellow, brownish gray, may be pale green
Specific Gravity:
2.607 (Calculated)
Crystal System:
Trigonal
Name:
Named after Johann Adam Otto Bütschli (1848-1920), Heidelberg, Germany, who prepared the artificial compound.
Dimorph of:
A poorly studied material that should probably not be afforded species status.


Classification of BütschliiteHide

Approved, 'Grandfathered' (first described prior to 1959)
5.AC.15

5 : CARBONATES (NITRATES)
A : Carbonates without additional anions, without H2O
C : Alkali and alkali-earth carbonates
Dana 7th ed.:
14.3.1.1
14.3.1.1

14 : ANHYDROUS NORMAL CARBONATES
3 : A2B(XO3)2
11.1.17

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

Physical Properties of BütschliiteHide

Transparency:
Translucent
Colour:
Grayish yellow, brownish gray, may be pale green
Streak:
(not reported)
Cleavage:
Distinct/Good
Good (?) on {0001}
Density:
2.607 g/cm3 (Calculated)

Optical Data of BütschliiteHide

Type:
Uniaxial
RI values:
nω = 1.595 nε = 1.455
Max Birefringence:
δ = 0.140
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low

Chemical Properties of BütschliiteHide

Formula:
K2Ca(CO3)2

Crystallography of BütschliiteHide

Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
R3m
Cell Parameters:
a = 5.3822(4) Å, c = 18.156(2) Å
Ratio:
a:c = 1 : 3.373
Unit Cell V:
455.48 ų (Calculated from Unit Cell)
Z:
3
Morphology:
Microscopic barrel-shaped crystals elongated [0001], earthy to porcellaneous masses.
Comment:
On synthetic

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
0.933 (20)
1.044 (20)
1.614 (20)
1.69 (20)
2.07 (10)
2.69 (10)
2.86 (100)
3.02 (30)

Type Occurrence of BütschliiteHide

Geological Setting of Type Material:
Clinkers formed by the fusion of wood ash in partly burned trees.
Associated Minerals at Type Locality:

Synonyms of BütschliiteHide

Other Language Names for BütschliiteHide

Related Minerals - Nickel-Strunz GroupingHide

5.AC.05EiteliteNa2Mg(CO3)2Trig.
5.AC.10NyerereiteNa2Ca(CO3)2Orth. mmm (2/m 2/m 2/m) : Cmcm
5.AC.10ZemkoriteNa2Ca(CO3)2Hex.
5.AC.20FairchilditeK2Ca(CO3)2Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
5.AC.25ShortiteNa2Ca2(CO3)3Orth. mm2 : Amm2
5.AC.30Burbankite(Na,Ca)3(Sr,Ba,Ce)3(CO3)5Hex. 6mm : P63mc
5.AC.30CalcioburbankiteNa3(Ca,REE,Sr)3(CO3)5Hex. 6mm : P63mc
5.AC.30Khanneshite(Na,Ca)3(Ba,Sr,Ce,Ca)3(CO3)5Hex.
5.AC.30SanromániteNa2CaPb3[CO3]5Hex. 6mm : P63mc

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
11.1.18Teschemacherite(NH4)HCO3Orth. mmm (2/m 2/m 2/m) : Pccn

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 BütschliiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Milton and Axelrod (1947) American Mineralogist: 32: 607-624.
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: 231-232.
American Mineralogist (1974): 59: 353-358.
Neues Jahrbuch für Mineralogie, Monatshefte (1980): 230-236.

Internet Links for BütschliiteHide

Localities for BütschliiteHide

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.
Brazil
 
  • Minas Gerais
    • Conselheiro Pena
Bermanec, V., Scholz, R., Markovic, F., Zigovecki-Gobac, Z., and Chaves, M. L. S. C., 2011, Mineralogy of the Boa Vista pegmatite, Galiléia, Minas Gerais, Brazil: Contributions to the 5th International Symposium on Granitic Pegmatites, Galliski et al., eds., Assoc. Geológica Argentina, Serie D, Publicación Especial 14, p. 33-35.
Scholz R, Chukanov N V, Menezes L A D, Atencio D, Lagoeiro L, Belotti F M, Chaves M L S C, Romano A W, Brandão P R, Belakovskiy D I, Pekov I (2014) Césarferreiraite, Fe2+Fe3+2(AsO4)2(OH)28·H2O, from Eduardo mine, Conselheiro Pena, Minas Gerais, Brazil: Second arsenate in the laueite mineral group. American Mineralogist 99, 607-611
Canada
 
  • Ontario
    • Lennox and Addington Co.
      • Richmond Township
Trail,R.J. 1980, Catalogue of Canadian Minerals, GSC Paper 80-18; Handbook of Mineralogy
    • Renfrew Co.
Handbook of Mineralogy
Trail,R.J. 1980, Catalogue of Canadian Minerals, GSC Paper 80-18
USA
 
  • Arizona
    • Coconino Co.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 149; Milton, C. (1944), Stones from trees, Scientific Monthly: 59: 421-423; Milton, C. & J. Axelrod (1947), Fused woodash stones: Fairchildite (n.sp.) K2CO3·CaCO3, buetschlite (n.sp.) 3K2CO3·2CacO3·6H2O, and calcite, CaCO3, their essential components, Am.Min.: 32: 607-624; Mrose, M.E., et al (1966), Synthesis and properties of fairchildite and buetschlite: Their relationship in wood-ash stone formations, Geol. Soc. Amer. Spec. Paper 101: 146.
Milton and Axelrod (1947) American Mineralogist: 32: 607-624.
    • Maricopa Co.
Garvie, L.A.J. (2016): Mineralogy of paloverde (Parkinsonia microphylla) tree ash from the Sonoran Desert: A combined field and laboratory study. American Mineralogist: 101 : 1584-1595; http://forum.amiminerals.it/viewtopic.php?f=5&t=12875 (2016
  • Idaho
    • Bonner Co.
      • Kaniksu National Forest
Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols
  • Oregon
    • Jackson Co.
ID by PXRD, on sample field collected by Frank Callahan in ash from burned Arbutus Menziesii (madrone) trees.
  • Virginia
    • Montgomery Co.
Mineralogical Record: 2(3): 130-132.
Mineral and/or Locality  
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