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Baylissite

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Formula:
K
 
2
Mg(CO
 
3
)
 
2
· 4H
 
2
O
System:MonoclinicColour:Colourless
Name:Named after N.S. Bayliss.
This page provides mineralogical data about Baylissite.

Classification of Baylissite

IMA status:Approved
Strunz 8th edition ID:5/D.02-40
Nickel-Strunz 10th (pending) edition ID:5.CB.45

5 : CARBONATES (NITRATES)
C : Carbonates without additional anions, with H2O
B : With large cations (alkali and alkali-earth carbonates)
Dana 8th edition ID:15.2.4.1

15 : HYDRATED NORMAL CARBONATES
2 : AmBn(XO3)p·xH2O, with (m+n):p > 1:1
Hey's CIM Ref.:11.1.15

11 : Carbonates
1 : Carbonates of the alkali metals and ammonium
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Type Occurrence of Baylissite

Type Locality:Gerstenegg-Sommerloch tunnel, Gerstenegg, Grimsel area, Hasli Valley, Bern, Switzerland
Year of Discovery:1976

Physical Properties of Baylissite

Colour:Colourless

Crystallography of Baylissite

Crystal System:Monoclinic
Cell Parameters:a = 12.37Å, b = 6.24Å, c = 6.86Å
β = 114.5°
Ratio:a:b:c = 1.982 : 1 : 1.099
Unit Cell Volume:V 481.84 ų (Calculated from Unit Cell)

Optical Data of Baylissite

Type:Biaxial (-)
RI values: nα = 1.465 nβ = 1.485 nγ = 1.535
2V:Measured: 64° , Calculated: 68°
Maximum Birefringence:δ = 0.070

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r > v strong

Chemical Properties of Baylissite

Formula:
K
 
2
Mg(CO
 
3
)
 
2
· 4H
 
2
O
Simplified for copy/paste:K2Mg(CO3)2·4H2O
Essential elements:C, H, K, Mg, O
All elements listed in formula:C, H, K, Mg, O

Relationship of Baylissite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.CB.05Thermonatrite
Na
 
2
CO
 
3
· H
 
2
O
5.CB.10Natron
Na
 
2
CO
 
3
· 10H
 
2
O
5.CB.15Trona
Na
 
3
H(CO
 
3
)
 
2
· 2H
 
2
O
5.CB.20Monohydrocalcite
CaCO
 
3
· H
 
2
O
5.CB.25Ikaite
CaCO
 
3
· 6H
 
2
O
5.CB.30Pirssonite
Na
 
2
Ca(CO
 
3
)
 
2
· 2H
 
2
O
5.CB.35Gaylussite
Na
 
2
Ca(CO
 
3
)
 
2
· 5H
 
2
O
5.CB.40Chalconatronite
Na
 
2
Cu(CO
 
3
)
 
2
· 3H
 
2
O
5.CB.50Tuliokite
Na
 
6
BaTh(CO
 
3
)
 
6
· 6H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
11.1.1Zabuyelite
Li
 
2
CO
 
3
11.1.2Natrite
Na
 
2
CO
 
3
11.1.3Nahcolite
NaHCO
 
3
11.1.4Wegscheiderite
Na
 
5
H
 
3
(CO
 
3
)
 
4
11.1.5Thermonatrite
Na
 
2
CO
 
3
· H
 
2
O
11.1.6Trona
Na
 
3
H(CO
 
3
)
 
2
· 2H
 
2
O
11.1.7Natron
Na
 
2
CO
 
3
· 10H
 
2
O
11.1.8Kalicinite
KHCO
 
3
11.1.9Shortite
Na
 
2
Ca
 
2
(CO
 
3
)
 
3
11.1.10Nyerereite
Na
 
2
Ca(CO
 
3
)
 
2
11.1.11Natrofairchildite
11.1.12Zemkorite
Na
 
2
Ca(CO
 
3
)
 
2
11.1.13Pirssonite
Na
 
2
Ca(CO
 
3
)
 
2
· 2H
 
2
O
11.1.14Gaylussite
Na
 
2
Ca(CO
 
3
)
 
2
· 5H
 
2
O
11.1.16Fairchildite
K
 
2
Ca(CO
 
3
)
 
2
11.1.17Bütschliite
K
 
2
Ca(CO
 
3
)
 
2
11.1.18Teschemacherite
(NH
 
4
)HCO
 
3

Other Names for Baylissite

Synonyms:
IMA1975-024
Other Languages:
German:Baylissit
Russian:Бейлиссит
Spanish:Baylissita

Other Information

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 Baylissite

Reference List:

- +
Schweizerische mineralogische und petrographische Mitteilungen (1976): 56: 187-194.

Internet Links for Baylissite

Search Engines:
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  • External Links:
  • Look for Baylissite on Webmineral
  • Look for Baylissite on Athena Mineralogy
  • Look for Baylissite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Baylissite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
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  • Localities for Baylissite

    (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.
    Switzerland
     
    • Bern
      • Hasli Valley
        • Grimsel area
          • Gerstenegg
    Schweiz.Min.Petr.Mitt.(1976) 56, 187-194
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