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About DavyneHide

Sir Humphry Davy
Colourless, white
5½ - 6
Specific Gravity:
2.42 - 2.53
Crystal System:
Named by T. Monticelli and N. Covelli in 1825 in honor of Sir Humphry Davy (17 December 1778, Penzance, Cornwall, England - 29 May 1829, Geneva, Switzerland), chemist who first isolated potassium, sodium, calcium, strontium, barium, magnesium and boron.

Cancrinite Group.

In the structure there are large channels closed by 12-membered tetrahedra rings. The channels are surrounded by cages, that are set in columns. In the "davyne subgroup" the cages contain [CaCl]+ lusters.

Classification of DavyneHide

Approved, 'Grandfathered' (first described prior to 1959)
First Published:

9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
B : Tektosilicates with additional anions

76 : TECTOSILICATES Al-Si Framework
2 : Al-Si Framework Feldspathoids and related species

17 : Silicates Containing other Anions
10 : Silicates with sulphate, molybdate or tungstate

Physical Properties of DavyneHide

Transparent, Translucent
Colourless, white
5½ - 6 on Mohs scale
on (10_10)
perfect to indistinct on {0001}
Irregular/Uneven, Conchoidal
2.42 - 2.53 g/cm3 (Measured)    2.50 g/cm3 (Calculated)

Optical Data of DavyneHide

Uniaxial (+)
RI values:
nω = 1.515 - 1.519 nε = 1.519 - 1.522
Max Birefringence:
δ = 0.004
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:

Chemical Properties of DavyneHide

IMA Formula:

Crystallography of DavyneHide

Crystal System:
Class (H-M):
6/m - Dipyramidal
Space Group:
Cell Parameters:
a = 12.705(4) Å, c = 5.368(3) Å
a:c = 1 : 0.423
Unit Cell V:
750.40 ų (Calculated from Unit Cell)
Prismatic crystals to 4cm.

Type Occurrence of DavyneHide

Other Language Names for DavyneHide


Varieties of DavyneHide

AcarbodavyneVariety of Davyne free of Carbon Dioxide. A member of the Cancrinite group.

Relationship of Davyne to other SpeciesHide

Other Members of this group:
Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6Trig. 3m : P3 1c
Alloriite(Na,Ca,K)26Ca4(Al6Si6O24)4(SO4)6Cl6Trig. 3m : P3 1c
Balliranoite(Na,K)6Ca2(Si6Al6O24)Cl2(CO3)Hex. 6 : P63
Biachellaite(Na,Ca,K)8(Al6Si6O24)(SO4)2(OH)0.5 · H2OTrig. 3 : P3
Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2OHex. 6 : P63
CancrisiliteNa7(Al5Si7O24)(CO3) · 3H2OHex.
DepmeieriteNa8(Al6Si6O24)(PO4,CO3)1-x · 3H2O (x<0.5)Hex. 6 : P63
Franzinite(Na,K)6Ca2(Al6Si6O24)(SO4)2 · 0.5H2OHex.
HydroxycancriniteNa8(Al6Si6O24)(OH)2 · 2H2OHex.
KircheriteNa5Ca2K(Al6Si6O24)(SO4)2 · 0.33H2OTrig. 3 2 : R3 2
KyanoxaliteNa7(Al6-xSi6+xO24)(C2O4)0.5+x · 5H2O (0 < x < 0.5)Hex. 6 : P63
Marinellite(Na,K)42Ca6(Al6Si6O24)6(SO4)8Cl2 · 3H2OTrig. 3m : P3 1c
PitiglianoiteNa6K2(Al6Si6O24)(SO4) · 2H2OHex.
SulfhydrylbystriteNa5K2Ca[Al6Si6O24](S5)2(SH)Trig. 3m : P3 1c
Tounkite(Na,Ca,K)8(Al6Si6O24)(SO4)2Cl · H2OHex.
Vishnevite(Na,K)8(Al6Si6O24)(SO4,CO3) · 2H2OHex. 6 : P63

Common AssociatesHide

Associated Minerals Based on Photo Data:
Sodalite2 photos of Davyne associated with Sodalite on mindat.org.
Cancrinite Group2 photos of Davyne associated with Cancrinite Group on mindat.org.
Spinel1 photo of Davyne associated with Spinel on mindat.org.
Augite1 photo of Davyne associated with Augite on mindat.org.
Olivine1 photo of Davyne associated with Olivine on mindat.org.
Vesuvianite1 photo of Davyne associated with Vesuvianite on mindat.org.
Pyroxene Group1 photo of Davyne associated with Pyroxene Group on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.FB.05Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6Trig. 3m : P3 1c
9.FB.05Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2OHex. 6 : P63
9.FB.05CancrisiliteNa7(Al5Si7O24)(CO3) · 3H2OHex.
9.FB.05Franzinite(Na,K)6Ca2(Al6Si6O24)(SO4)2 · 0.5H2OHex.
9.FB.05HydroxycancriniteNa8(Al6Si6O24)(OH)2 · 2H2OHex.
9.FB.05PitiglianoiteNa6K2(Al6Si6O24)(SO4) · 2H2OHex.
9.FB.05Tounkite(Na,Ca,K)8(Al6Si6O24)(SO4)2Cl · H2OHex.
9.FB.05Vishnevite(Na,K)8(Al6Si6O24)(SO4,CO3) · 2H2OHex. 6 : P63
9.FB.05Marinellite(Na,K)42Ca6(Al6Si6O24)6(SO4)8Cl2 · 3H2OTrig. 3m : P3 1c
9.FB.05Farneseite(Na,Ca,K)56(Al6Si6O24)7(SO4)12 · 6H2OHex. 6/m : P63/m
9.FB.05Alloriite(Na,Ca,K)26Ca4(Al6Si6O24)4(SO4)6Cl6Trig. 3m : P3 1c
9.FB.05Fantappièite[Na82.5Ca33K16.5](Si99Al99O396)(SO4)33 · 4H2OTrig. 3 : R3
9.FB.05KyanoxaliteNa7(Al6-xSi6+xO24)(C2O4)0.5+x · 5H2O (0 < x < 0.5)Hex. 6 : P63
9.FB.05Balliranoite(Na,K)6Ca2(Si6Al6O24)Cl2(CO3)Hex. 6 : P63
9.FB.05CarbobystriteNa8(Al6Si6O24)(CO3) · 3.5H2OTrig. 3m : P3 1c
9.FB.05DepmeieriteNa8(Al6Si6O24)(PO4,CO3)1-x · 3H2O (x<0.5)Hex. 6 : P63
9.FB.05KircheriteNa5Ca2K(Al6Si6O24)(SO4)2 · 0.33H2OTrig. 3 2 : R3 2
9.FB.10BicchuliteCa2(Al2SiO6)(OH)2Iso. 4 3m : I4 3m
9.FB.10DanaliteBe3Fe2+4(SiO4)3SIso. 4 3m : P4 3n
9.FB.10GenthelviteBe3Zn4(SiO4)3SIso. 4 3m : P4 3n
9.FB.10Haüyne(Na,K)3(Ca,Na)(Al3Si3O12)(SO4,S,Cl)Iso. 4 3m : P4 3n
9.FB.10HelvineBe3Mn2+4(SiO4)3SIso. 4 3m : P4 3n
9.FB.10LazuriteNa6Ca2(Al6Si6O24)(SO4,S,S2, S3,Cl,OH)2Iso. 4 3m : P4 3n
9.FB.10NoseanNa8(Al6Si6O24)(SO4) · H2OIso. 4 3m : P4 3n
9.FB.10SodaliteNa8(Al6Si6O24)Cl2Iso. 4 3m : P4 3n
9.FB.10TugtupiteNa4BeAlSi4O12ClTet. 4 : I4
9.FB.15MarialiteNa4Al3Si9O24ClTet. 4/m : I4/m
9.FB.15MeioniteCa4Al6Si6O24CO3Tet. 4/m : I4/m
9.FB.15Silvialite(Ca,Na)4(Al6Si6O24)(SO4,CO3)Tet. 4/m : I4/m

Related Minerals - Dana Grouping (8th Ed.)Hide,K)22Ca10(Si24Al24O96)(SO4)6Cl6Trig. 3m : P3 1c,K)7Ca(Al6Si6O24)(S5)ClHex.,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2OHex. 6 : P63 · 3H2OHex.,K)6Ca2(Al6Si6O24)(SO4)2 · 0.5H2OHex.,K,Ca)7-8(Al6Si6O24)(SO4,Cl)1-2Hex. · 2H2OHex.,K)16Ca8(Al6Si6O24)3(SO4)5Cl4Hex. · 2H2OHex.,K)6Ca2(Al6Si6O24)Cl4Hex.•2H2OHex.,Ca,K)8(Al6Si6O24)(SO4)2Cl · H2OHex.,K)8(Al6Si6O24)(SO4,CO3) · 2H2OHex. 6 : P63,K)4(Ca,Na)6[(SO4)3|(Si,Al)20O39(OH)2] · 0.5H2OHex.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

17.10.1NoseanNa8(Al6Si6O24)(SO4) · H2OIso. 4 3m : P4 3n
17.10.2PitiglianoiteNa6K2(Al6Si6O24)(SO4) · 2H2OHex.
17.10.3Vishnevite(Na,K)8(Al6Si6O24)(SO4,CO3) · 2H2OHex. 6 : P63
17.10.4Haüyne(Na,K)3(Ca,Na)(Al3Si3O12)(SO4,S,Cl)Iso. 4 3m : P4 3n
17.10.7Tuscanite(K(Ca,Na)6(Si,Al)10O22[SO4,CO3,(OH)2] · H2OMon.
17.10.9Delhayelite(Na,K)10Ca5Al6Si32O80(Cl2,F2,SO4)3 · 18H2OOrth.
17.10.10HydrodelhayeliteKCa2AlSi7O17(OH)2 · 6H2OOrth.
17.10.12Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6Trig. 3m : P3 1c
17.10.13Franzinite(Na,K)6Ca2(Al6Si6O24)(SO4)2 · 0.5H2OHex.
17.10.16Chessexite(Na,K)4Ca2(Mg,Zn)3Al8(SO4)10(SiO4)2 · 40H2OOrth.
17.10.17InneliteNa2CaBa4Ti3(Si2O7)2(SO4)2O4Tric. 1 : P1
17.10.18ThaumasiteCa3(SO4)[Si(OH)6](CO3) · 12H2OHex. 6 : P63
17.10.20ChlorellestaditeCa5(SiO4)1.5(SO4)1.5ClHex. 6/m : P63/m
17.10.21HydroxylellestaditeCa5(SiO4)1.5(SO4)1.5(OH)Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm
17.10.23MattheddleitePb5(SiO4)1.5(SO4)1.5(Cl,OH)Hex. 6/m : P63/m
17.10.24QueititePb4Zn2(SO4)(SiO4)(Si2O7)Mon. 2 : P21
17.10.25RoeblingitePb2Ca6Mn2+(Si3O9)2(SO4)2(OH)2 · 4H2OMon. 2/m : B2/m
17.10.26YoshimuraiteBa2Mn2Ti(Si2O7)(PO4)O(OH)Tric. 1 : P1
17.10.28Wenkite(Ba,K)4(Ca,Na)6[(SO4)3|(Si,Al)20O39(OH)2] · 0.5H2OHex.
17.10.30WeliniteMn2+6(W6+,Mg)2(SiO4)2(O,OH)6Trig. 3 : P3

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 DavyneHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Monticelli, T., Covelli, N. (1825) Davina. in Prodromo della Mineralogia Vesuviana, Napoli: 1: 405-421.
Haidinger, W. (1827) Über den Davyn, eine neue Mineralspecies. Annalen der Physik und Chemie: 87/F2-11: 470-474.
Pauling, L. (1930) The structure of some sodium and calcium aluminosilicates. Proceedings of the National Academy of Sciences: 16: 453-459.
Leoni, L., Mellini, M., Merlino, S., Orlandi, P. (1979) Cancrinite-like minerals: new data and crystal chemical considerations. Rendiconti della Società Italiana di Mineralogia e Petrologia: 35: 713-719.
Hassan, I., Grundy, H.D. (1984) The crystal structures of sodalite-group minerals. Acta Crystallographica: B40: 6-13.
Bonaccorsi E., Merlino S., Pasero M. (1990) Davyne: its structural relationships with cancrinite and vishnevite. Neues Jahrbuch für Mineralogie, Monatshefte: 3: 97-112.
Hassan, I., Grundy, H.D. (1990) Structure of davyne and implications for stacking faults. The Canadian Mineralogist: 28: 341-349.
Jambor, J.L., Burke, E.A.J. (1990) New mineral names. American Mineralogist: 75: 1431-1437.
Hassan, I., Buseck, P.R. (1992) The origin of the superstructure and modulations in cancrinite. The Canadian Mineralogist: 30: 49-59.
Ballirano, P., Maras, A., Buseck, P.R. (1996) Crystal chemistry and IR spectroscopy of Cl- and SO4-bearing cancrinite-like minerals. American Mineralogist: 81: 1003-1012.
Ballirano, P., Bonaccorsi, E., Merlino, S., Maras, A. (1998) Carbonate groups in davyne: structural and crystal-chemical considerations. The Canadian Mineralogist: 36: 1285-1292.
Rozenberg, K.A., Rastsvetaeva, R.K., Chukanov, N.V. (2009) Crystal structures of oxalate-bearing cancrinite with an unusual arrangement of CO3 groups and sulfate-rich davyne. Crystallography Reports: 54: 793-799.
Pekov, I.V., Olysych, L.V., Chukanov, N.V., Zubkova, N.V., Pushcharovsky, D.Y., Van, K., Giester, G., Tillmanns, E. (2011) Crystal chemistry of cancrinite-group minerals with an AB-type framework: A review and new data. I. Chemical and structural variations. The Canadian Mineralogist: 49: 1129-1150.
Chukanov, N.V., Pekov, I.V., Olysych, L.V., Zubkova, N.V., Vigasina, M.F., (2011) Crystal chemistry of cancrinite-group minerals with an AB-type framework: A review and new data. II. IR spectroscopy and its crystal-chemical implications. The Canadian Mineralogist: 49: 1151-1164.
Gatta, G.D., Lotti, P. (2016) Cancrinite-group minerals: Crystal-chemical description and properties under nonambient conditions — A review. American Mineralogist: 101: 253-265.

Internet Links for DavyneHide

Localities for DavyneHide

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.
  • Red Sea
Bonaccorsi E., Merlino S., Pasero M.(1991): Davyne from Zabargad (St. John's) Island: peculiar chemical and structural features. Acta Vulcanol., 2, 55-63.
  • Rhineland-Palatinate
    • Eifel
      • Andernach
        • Nickenich
Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag München, 1983
      • Laach lake volcanic complex
        • Glees
Brauns, R. ; Uhlig, J., Cancrinit- und Nephelin-führende Auswürflinge aus dem Laacher See Gebiet, N.Jb. Mineral.Geol.Paläonolog., Beil. Band 56, Abt. A, 468-498, 1913
        • Kruft
Brauns, R. ; Uhlig, J., Cancrinit- und Nephelin-führende Auswürflinge aus dem Laacher See Gebiet, N.Jb. Mineral.Geol.Paläonolog., Beil. Band 56, Abt. A, 468-498, 1913
        • Mendig
          • Niedermendig
Brauns, R. ; Uhlig, J., Cancrinit- und Nephelin-führende Auswürflinge aus dem Laacher See Gebiet, N.Jb. Mineral.Geol.Paläonolog., Beil. Band 56, Abt. A, 468-498, 1913
Brauns, R. ; Uhlig, J., Cancrinit- und Nephelin-führende Auswürflinge aus dem Laacher See Gebiet, N.Jb. Mineral.Geol.Paläonolog., Beil. Band 56, Abt. A, 468-498, 1913)
            • Wingertsberg
Brauns, R. ; Uhlig, J., Cancrinit- und Nephelin-führende Auswürflinge aus dem Laacher See Gebiet, N.Jb. Mineral.Geol.Paläonolog., Beil. Band 56, Abt. A, 468-498, 1913
      • Mayen
        • Ettringen
          • Bellerberg volcano
[Blass, G., Graf, H.W., Interessante Neuigkeiten über Cancrinit, Fluorit und Fuchsit aus der Vulkaneifel, Mineralien-Welt 12/1, 26-29, 2001] [Lapis, 15 (5), 9-36]
      • Niederzissen
        • Brenk
Blass, G., Graf , HW., Interessante Neuigkeiten über Cancrinit, Fluorit und Fuchsit aus der Vulkaneifel, MW 1/2001
        • Burgbrohl
Blass, G., Graf , HW., Neufunde von bekannten Fundorten (VI), MW 6/1992
        • Hannebach
Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag München, 1983
Italy (TL)
  • Campania
    • Naples Province
      • Somma-Vesuvius Complex
NJMM (1990) (3), 97
          • Ercolano
            • San Vito
          • Pollena - Trocchia area
Carati M., 1982. Guida alla mineralogia vesuviana. Guide Calderini, Bologna.
M. Carati - Guida alla mineralogia vesuviana - Calderini, Bologna, 1982
[BINON J., BONACCORSI E., BERNHARDT H.J., FRANSOLET A. M. (2004) - The mineralogical status of "cavolinite" from Vesuvius, Italy, and crystallochemical data on the davyne subgroup. Eur. J. Mineral., 16 (3), 511-520] [Russo, M., Punzo, I. (2004): I minerali del Somma-Vesuvio, AMI]
          • Terzigno
Luigi Chiappino data
  • Latium
    • Rome Province
      • Sacrofano Caldera
        • Campagnano di Roma
Liotti L., Tealdi E. (1983): Il vulcanismo Sabatino ed i minerali della Caldera di Sacrofano. Riv. Miner. Ital., 7, 2 (2-1983), 35-58.
        • Sacrofano
Stoppani F.S., Curti E. (1982): I minerali del Lazio. Editoriale Olimpia, Firenze, 291 pp.
    • Viterbo Province
Stoppani, F.S., Curti, E. (1982): I Minerali del Lazio. Ed. Olimpia, Firenze, 154-158
      • Vico volcanic complex (Vico Lake)
Fantappiè L. (1896): La Danburite ed altri minerali: in alcuni pezzi notevoli di rocce antiche, tra i “blocchi errratici” della regione Cimina. Rend. R. Acc. Naz. Lincei, Classe sci. fis. mat. nat., ser. 5, 5, 2, 108-113; Fantappiè L. (1897): Nuove osservazioni su minerali dei blocchi erratici della regione cimina. Riv. Miner. e Crist. Ital., 17, 3-19; Stoppani F.S, Curti E. (1982): I minerali del Lazio. Editoriale Olimpia, Firenze, 291 pp.
No reference listed
  • Tuscany
    • Grosseto Province
      • Pitigliano
Liotti L., 1991. I minerali dei vulcani laziali a Pitigliano (Grosseto). Riv. Mineral. Ital., 15 (3): 121-139.
Mineral and/or Locality  
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