Donate now to keep alive!Help|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on Mindat
What is a mineral?The most common minerals on earthMineral PhotographyThe Elements and their MineralsGeological TimeMineral Evolution
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery


This page is currently not sponsored. Click here to sponsor this page.
Antonio D'Achiardi
4 - 4½
Crystal System:
Named after Antonio D'Achiardi (November 28, 1839, Pisa – December 10, 1902, Pisa), Professor of Mineralogy, Universitá di Pisa, Italy, who first described the mineral discovered by his son in a granitic pegmatite.
Zeolite Group.
Name for unspecified member within the series between dachiardite-Ca and dachiardite-Na.

Hide all sections | Show all sections

Classification of DachiarditeHide

1 : Zeolite group - True zeolites

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

Physical Properties of DachiarditeHide

4 - 4½ on Mohs scale

Optical Data of DachiarditeHide

Biaxial (+)
RI values:
nα = 1.488 - 1.494 nβ = 1.490 - 1.496 nγ = 1.494 - 1.499
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:
r > v strong

Crystallography of DachiarditeHide

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

Synonyms of DachiarditeHide

Other Language Names for DachiarditeHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Clinoptilolite6 photos of Dachiardite associated with Clinoptilolite on
Mordenite6 photos of Dachiardite associated with Mordenite on
Albite1 photo of Dachiardite associated with Albite on
Orthoclase1 photo of Dachiardite associated with Orthoclase on
Analcime1 photo of Dachiardite associated with Analcime on

Related Minerals - Dana Grouping (8th Ed.)Hide,Ca,K2)Al2Si10O24 · 7H2OOrth. · 5H2OMon.,Al)48O100 · 32H2OOrth.,Ca,K2)5Al10Si38O96 · 25H2OMon.,Al)96O192 · 70H2OOrth. mmm (2/m 2/m 2/m) : Imma

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

16.10.4Thomsonite-CaNaCa2[Al5Si5O20] · 6H2OOrth. mmm (2/m 2/m 2/m)
16.10.5Gonnardite(Na,Ca)2(Si,Al)5O10 · 3H2OOrth.
16.10.6MesoliteNa2Ca2Si9Al6O30 · 8H2OOrth. mm2 : Fdd2
16.10.8Garronite-CaNa2Ca5Al12Si20O64 · 27H2OTet. 4 2m : I4m2
16.10.9BoggsiteCa8Na3(Si,Al)96O192 · 70H2OOrth. mmm (2/m 2/m 2/m) : Imma
16.10.10Herschelite(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2OTrig.
16.10.12Fedorite(Na,K)2-3(Ca4Na3)Si16O38(OH,F)2 · 3.5H2OTric. 1 : P1
16.10.13WillhendersoniteKCa[Al3Si3O12] · 5H2OTric.
16.10.14Barrerite(Na,K,Ca0.5)2[Al2Si7O18] · 7H2OOrth. mmm (2/m 2/m 2/m)
16.10.15Mordenite(Na2,Ca,K2)Al2Si10O24 · 7H2OOrth.
16.10.16Reyerite(Na,K)2Ca14(Si,Al)24O58(OH)8 · 6H2OTrig.
16.10.20GobbinsiteNa5(Si11Al5)O32 · 11H2OOrth.
16.10.23OffretiteKCaMg(Si13Al5)O36 · 15H2OHex. 6 m2 : P6m2
16.10.24PerlialiteK9Na(Ca,Sr)[Al2Si4O12]6 · 15H2OHex.
16.10.27Sodium Dachiardite(Na2,Ca,K2)4-5Al8Si40O96 · 26H2O
16.10.28Mazzite-Mg(Mg,K,Ca)5(Si26Al10)O72 · 28H2OHex.
16.10.29RoggianiteCa2Be(OH)2Al2Si4O13 · 2.5H2OTet.

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 DachiarditeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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 DachiarditeHide

Localities for DachiarditeHide

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.
  • 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)
  • Kardzhali Oblast (Kurdzhali; Kărdžali; Kurdjali)
    • Momchilgrad Obshtina
Encheva, S., Petrov, P., Chukanov, N., Pekov, I., Енчева, С., Петко, П., ... & Пеков, И. Dachiardite-K from the area of Austa village, Momchilgrad municipality, Eastern Rhodopes–a new mineral species of zeolite group Дакиардит-K от района на с. Ауста, община Момчилград, Източни Родопи–нов минерален вид от групата на зеолитите.
    • 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.
  • 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)
    • Liberec Region
      • Proseč pod Ještědem
[Dachiardite-Ca] Pauliš P. et al.: Dachiardit-Ca z Proseče pod Ještědem u Liberce. Zprávy o geologických výzkumech v roce 2007, Mineralogie, petrologie a geochemie, 179-181.
    • 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.
  • Bavaria
    • Franconia
      • Maroldsweisach
[Dachiardite-Na] Wittern: "Mineralfundorte in Deutschland", 2001
  • Hesse
    • Vogelsberg
      • Ortenberg
  • 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
  • Trentino-Alto Adige (Trentino-Südtirol)
    • 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
        • Canazei
[Dachiardite-Na] Pedroni G. (1996): Note di mineralogia del Passo Fedaia (gruppo della Marmolada). Riv. Mineral. Ital., 20, 2 (2-1996), 189-192.
[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.
  • 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
  • Irbid
    • Maqarin area
Khoury, H. N., Salameh, E., & Abdul-Jaber, Q. (1985). Characteristics of an unusual highly alkaline water from the Maqarin area, northern Jordan. Journal of Hydrology, 81(1), 79-91.
New Zealand
  • South Island
    • Canterbury Region
      • Hurunui District
        • Culverden
Jesse Crawford specimen
  • Crimea Oblast'
[Dachiardite-Na] World of Stones v.9
[Dachiardite-Na] Tischenko A. data
  • California
    • Los Angeles Co.
Mineral News v.14 no.9
        • Agoura Hills
Houseley, Bob (2013)
Housley, R. (2016) personal communication to Marek Chorazewicz Collected by Chorazewicz, M. (2016)
DeVito, A. N. (1997), Minerals of the Canwood construction site, Agoura Hills, California. Micro Probe: 8(5): 2-10.
    • Riverside Co.
      • Mule Mts (Palo Verde Mts)
        • Mule Mountains District (Hodges Mountain District)
  • 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.
[Dachiardite-Ca] Micro Probe Volume IX Number 3
  • Washington
    • Wahkiakum Co.
      • Altoona
[Dachiardite-Ca] Micro Probe Volume IX Number 3 Spring 2001
[Dachiardite-Ca] Rudy Tschernich Zeolite Collection
  • Wyoming
    • Park Co.
[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
[Dachiardite-Na] Tschernich, 1992. Zeolites of the World
Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2018, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: March 23, 2018 20:12:58 Page generated: March 10, 2018 23:24:34
Go to top of page