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Dachiardite

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System:
Monoclinic
Colour:
Colourless
Hardness:
4 - 4½
Name:
Named after A. D'Achiardi
Zeolite Group.
Name for unspecified member within the series between dachiardite-Ca and dachiardite-Na.

Classification of Dachiardite

77.1.6.4

77 : TECTOSILICATES Zeolites
1 : Zeolite group - True zeolites
16.10.22

16 : Silicates Containing Aluminum and other Metals
10 : Aluminosilicates of Ca and alkalis
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Physical Properties of Dachiardite

Colour:
Colourless
Hardness (Mohs):
4 - 4½

Crystallography of Dachiardite

Crystal System:
Monoclinic
Cell Parameters:
a = 18.03Å, b = 7.52Å, c = 10.2Å
β = 104.46°
Ratio:
a:b:c = 2.398 : 1 : 1.356
Unit Cell Volume:
V 1,339.16 ų (Calculated from Unit Cell)

Optical Data of Dachiardite

Type:
Biaxial (+)
RI values:
nα = 1.488 - 1.494 nβ = 1.490 - 1.496 nγ = 1.494 - 1.499
2V:
Measured: 58° to 73°, Calculated: 72° to 80°
Max Birefringence:
δ = 0.006
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v strong

Relationship of Dachiardite to other Species

16.10.1Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
16.10.2LisetiteCaNa2Al4Si4O16
16.10.4Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
16.10.5Gonnardite(Na,Ca)2(Si,Al)5O10 · 3H2O
16.10.6MesoliteNa2Ca2Si9Al6O30 · 8H2O
16.10.7Faujasite
16.10.8GarroniteNa2Ca5Al12Si20O64 · 27H2O
16.10.9BoggsiteCa8Na3(Si,Al)96O192 · 70H2O
16.10.10Herschelite
16.10.11Phillipsite
16.10.12Fedorite(Na,K)2-3(Ca4Na3)Si16O38(OH,F)2 · 3.5H2O
16.10.13WillhendersoniteKCa[Al3Si3O12] · 5H2O
16.10.14Barrerite(Na,K,Ca0.5)2[Al2Si7O18] · 7H2O
16.10.15Mordenite(Na2,Ca,K2)Al2Si10O24 · 7H2O
16.10.16Reyerite(Na,K)2Ca14(Si,Al)24O58(OH)8 · 6H2O
16.10.17Lévyne
16.10.18Clinoptilolite
16.10.19Heulandite
16.10.20GobbinsiteNa4(Ca,Mg,K2)Al6Si10O32 · 12H2O
16.10.21Stilbite
16.10.23OffretiteKCaMgAl5Si13O36 · 16H2O or near
16.10.24PerlialiteK9Na(Ca,Sr)[Al2Si4O12]6 · 15H2O
16.10.25Erionite
16.10.26Paulingite
16.10.27Sodium Dachiardite(Na2,Ca,K2)4-5Al8Si40O96 · 26H2O
16.10.28Mazzite-Mg(Mg,K,Ca)5(Si26Al10)O72 · 28H2O
16.10.29RoggianiteCa2Be(OH)2Al2Si4O13 · 2.5H2O

Other Names for Dachiardite

Name in Other Languages:

Other Information

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 Dachiardite

Reference List:
Bonatti S., Gottardi G. (1960) Dati ottici e strutturali sulla dachiardite. Periodico di Mineralogia, 103-108.

Gottardi G. (1960) Sul dimorfismo mordenite-dachiardite. Periodico di Mineralogia, 183-191.

Galli E. (1965) Lo spettro di polvere della dachiardite. Periodico di Mineralogia, 129-135.

Internet Links for Dachiardite

Localities for Dachiardite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Austria
 
  • Carinthia
    • Klagenfurt
      • Gundersdorf
[Dachiardite-Na] G. Niedermayr: Carinthia II 187./107.:172 (1997)
  • Styria
    • Bruck an der Mur
      • Kapfenberg
        • Tanzenberg
[Dachiardite-Na] ostl, W. & Walter, F. (1983); Postl, W. et al. (1985); Exel, R. (1993)
    • Graz
      • Wildon
        • Weitendorf
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
Bulgaria
 
  • Kardzhali Oblast (Kurdzhali; Kărdžali; Kurdjali)
    • Rhodope Mts
[Dachiardite-Ca] Gellens, L., Price, G. D., & Smith, J. V. (1982). The structural relation between svetlozarite and dachiardite. Mineralogical Magazine, 45(337), 157-161.
Canada
 
  • Québec
    • Montréal
[Dachiardite-Na] BONARDI, M., ROBERTS, A.C., and SABINA, A.P. (1981) Sodium-rich dachiardite from the Francon quarry, Montreal Island, Quebec. Canadian Mineralogist, 19, 285-289. TARASSOFF, P., HORVÁTH, L. and PFENNINGER-HORVÁTH, E. (2006) Famous mineral localities: the Francon quarry, Montréal, Québec. The Mineralogical Record, 37, 5-60.
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Pardubice Region
      • Svitavy (Zwittau)
[Dachiardite-Ca] Rychlý, R., Veselovský, F., Ondruš, P.: Dachiardite from Svojanov, Czech Republic. Scripta Fac. Sci. Nat. Univ. Masaryk. Brun, Geol., 1996, vol. 26, p. 42 - 43.
    • Ústí Region
      • Děčín (Tetschen)
        • Krásná Lípa
[Dachiardite-Ca] P.Pauliš,L.Hrůzek,O.Janeček,J.Sejkora,R.Malíková,F.Fedyuk(2014)Dachiardite-Ca and associated mineralization from Doubice-Vápenka near Krásná Lípa(Czech Republic).Bull.Min.-Pet.od.Národní muzeum Praha 22,1
French Southern and Antarctic Lands
 
  • Kerguelen Islands
Giret, A., Verdier, O. & Nativel, P. (1992). The zeolitisation of Kerguelen Islands, Southern Indian Ocean. In: Yoshida, Y., et al. (eds) Recent Progress in Antarctic Earth Science, Tokyo: Terra Publishing 32, 1–36. Co., pp. 457–463.
Germany
 
  • Bavaria
    • Franconia
      • Maroldsweisach
[Dachiardite-Na] Wittern: "Mineralfundorte in Deutschland", 2001
  • Hesse
    • Vogelsberg
      • Ortenberg
Hungary
 
  • Borsod-Abaúj-Zemplén Co.
    • Zemplén Mts (Tokaj Mts)
      • Regéc
Szakáll & Jánosi: Minerals of Hungary, 1995
  • Heves Co.
Van King
  • Pest Co.
    • Börzsöny Mts
      • Szob
[Dachiardite-Ca] Szakáll-Gatter-Szendrei: Mineral species of Hungary 2005
Italy
 
  • Trentino-Alto Adige
    • Bolzano Province (South Tyrol)
      • Gardena Valley (Gröden Valley)
        • Siusi Alp (Seis Alp)
[Dachiardite-Na] Exel, R. (1987): Guida mineralogica del Trentino e del Sudtirolo. Athesia, Bolzano, 204 pp.
    • Trento Province
      • Fassa Valley
[Dachiardite-Na] Exel, R. (1987): Guida mineralogica del Trentino e del Sudtirolo. Athesia, Bolzano, 204 pp.
        • Duron Valley
[Dachiardite-Na] Exel, R. (1987): Guida mineralogica del Trentino e del Sudtirolo. Athesia, Bolzano, 204 pp.
[Dachiardite-Na] Exel, R. (1987): Guida mineralogica del Trentino e del Sudtirolo. Athesia, Bolzano, 204 pp.
[Dachiardite-Na] Exel, R. (1987): Guida mineralogica del Trentino e del Sudtirolo. Athesia, Bolzano, 204 pp.
[Dachiardite-Na] Exel, R. (1987): Guida mineralogica del Trentino e del Sudtirolo. Athesia, Bolzano, 204 pp.
[Dachiardite-Na] Exel, R. (1987): Guida mineralogica del Trentino e del Sudtirolo. Athesia, Bolzano, 204 pp.
[Dachiardite-Na] Exel, R. (1987): Guida mineralogica del Trentino e del Sudtirolo. Athesia, Bolzano, 204 pp.
  • Tuscany
    • Livorno Province
      • Elba Island
        • Campo nell'Elba
[Dachiardite-Ca] G. D'Achiardi (1905) - Zeolite probabilmente nuova dell'isola d'Elba - Atti Soc. Tosc. Sc. Nat., P.V., 14: 150-156.
[Dachiardite-Ca] Orlandi, P., & Pezzotta, F. (1997). Minerali dell'Isola d'Elba. Edizioni Novecento Grafico, Bergamo, 249 pp.
[Dachiardite-Ca] Orlandi, P., & Pezzotta, F. (1997). Minerali dell'Isola d'Elba. Edizioni Novecento Grafico, Bergamo, 249 pp. ; Coombs, D.S., Alberti, A., Armbruster, T., Artioli, G., Colella, C., Galli, E., Grice, J.D., Liebau, F., Mandarino, J.A., Minato, H., Nickel, E.H., Passaglia, E., Peacor, D.R., Quartieri, S., Rinaldi, R., Ross, M., Sheppard, R.A., Tillmanns, E., Vezzalini, G. (1997): Recommended nomenclature for zeolites minerals - Report of the Subcommittee on Zeolites of the International Mineralogical Association, Commission on New Minerals and Mineral Names. [Review]. Canadian Mineralogist, 35, 1571-1606.
Japan
 
  • Honshu Island
    • Chubu region
      • Nagano Prefecture
        • Nagano City
          • Matsushiro
            • Toyosaka
[Dachiardite-Ca] Eur. J. Mineral. , 1990, 2, pp. 187-193.
      • Niigata Prefecture
        • Aga-machi (Higashi-Kanbara-gun)
          • Tsugawa
[Dachiardite-Na] Yoshimura, T. & Wakabayashi, S. (1977): Na-dachiardite and associated high-silica zeolites from Tsugawa, northeast Japan. Science Reports of Niigata University, Ser. E, Geology and Mineralogy, 4, 49-65.
      • Shizuoka Prefecture
        • Kawazu
Yamada, T. et al (1994) Suisyou, 8, #1, 12-16.
  • Kyushu Region
    • Kagoshima Prefecture
[Dachiardite-Ca] Eur. J. Mineral. , 1990, 2, pp. 187-193.
  • Tokyo Metropolis
    • Ogasawara Islands
      • Chichijima Group
        • Chichi Island (Chichijima)
Mineralogical Journal Vol. 11 (1982) , No. 1 pp1-14
Mineralogical Journal Vol. 11 (1982) , No. 1 pp1-14
New Zealand
 
  • South Island
    • Canterbury
Jesse Crawford specimen
Ukraine
 
  • Crimea Oblast'
[Dachiardite-Na] World of Stones v.9
[Dachiardite-Na] Tischenko A. data
USA
 
  • California
    • Los Angeles Co.
Mineral News v.14 no.9
        • Agoura Hills
Houseley, Bob (2013)
DeVito, A. N. (1997), Minerals of the Canwood construction site, Agoura Hills, California. Micro Probe: 8(5): 2-10.
www.mineralsocal.org
    • Riverside Co.
      • Mule Mts
        • Wiley Well District
www.mineralsocal.org/scfm/california/r.htm
  • Oregon
    • Deschutes Co.
      • East Lake
Mineralogy of 10 Geothermal boreholes drilled in and around the Newberry Caldera U.S. Geological Survey Professional Paper, Issue 1578 By Keith E. Bargar, Terry E. C. Keith 1999
    • Lincoln Co.
      • Agate Beach
[Dachiardite-Na] Micro Probe Vol. 9 No 3, spring 2001; Tschernich, R. (1992): Zeolites of the World, 116
    • Tillamook Co.
Micro Probe (1990) Volume VII Number 1 pp 9-15
  • Washington
    • Wahkiakum Co.
      • Altoona
[Dachiardite-Ca] Micro Probe Volume IX Number 3 Spring 2001
  • Wyoming
    • Park Co.
[Dachiardite-Na] Tschernich, 1992. Zeolites of the World
[Dachiardite-Na] Bargar, K.E.; Beeson, M.H. & Keith, T.E.C. (1981): Zeolites in Yellowstone National Park. Mineralogical Record 12, 29-38
[Dachiardite-Na] Bargar, K.E.; Beeson, M.H. & Keith, T.E.C. (1981): Zeolites in Yellowstone National Park. Mineralogical Record 12, 29-38
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