Mindat Logo
Home Page Log In Messageboard The Mindat Directory
Register Search Pages Mineral Chatroom The Mindat Store

Dachiardite

This page is currently not sponsored. Click here to sponsor this page.
Big Photo

Dachiardite-Ca
Fonte del Prete, San Piero in Campo, Campo nell'Elba, Elba Island, Livorno Province, Tuscany, Italy
© Chinellato Matteo

Show Dachiardite Photos (41)



System:MonoclinicColour:Colourless
Hardness:4 - 4½
Name:Named after A. D'Achiardi
Synonym of:Dachiardite-Ca, Dachiardite-Na


Zeolite Group.
Name for unspecified member within the series between dachiardite-Ca and dachiardite-Na.

Classification of Dachiardite

Dana 8th edition ID:77.1.6.4

77 : TECTOSILICATES Zeolites
1 : Zeolite group - True zeolites
Hey's CIM Ref.:16.10.22

16 : Silicates Containing Aluminum and other Metals
10 : Aluminosilicates of Ca and alkalis
mindat.org URL:http://www.mindat.org/min-1212.html
Please feel free to link to this page.

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°
Maximum Birefringence:δ = 0.006

Chart 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

Related Minerals - Hey's Index Grouping:

- +
16.10.1Bytownite
(Ca,Na)[Al(Al,Si)Si
 
2
O
 
8
]
16.10.2Lisetite
CaNa
 
2
Al
 
4
Si
 
4
O
 
16
16.10.4Thomsonite-Ca
NaCa
 
2
[Al
 
5
Si
 
5
O
 
20
] · 6H
 
2
O
16.10.5Gonnardite
(Na,Ca)
 
2
(Si,Al)
 
5
O
 
10
 · 3H
 
2
O
16.10.6Mesolite
Na
 
2
Ca
 
2
Si
 
9
Al
 
6
O
 
30
 · 8H
 
2
O
16.10.7Faujasite
16.10.8Garronite
Na
 
2
Ca
 
5
Al
 
12
Si
 
20
O
 
64
 · 27H
 
2
O
16.10.9Boggsite
Ca
 
8
Na
 
3
(Si,Al)
 
96
O
 
192
 · 70H
 
2
O
16.10.10Herschelite
16.10.11Phillipsite
16.10.12Fedorite
(Na,K)
 
2-3
(Ca
 
4
Na
 
3
)Si
 
16
O
 
38
F
 
2
 · 3.5H
 
2
O
16.10.13Willhendersonite
KCa[Al
 
3
Si
 
3
O
 
12
] · 5H
 
2
O
16.10.14Barrerite
(Na,K,Ca
 
0.5
)
 
2
[Al
 
2
Si
 
7
O
 
18
] · 7H
 
2
O
16.10.15Mordenite
(Na
 
2
,Ca,K
 
2
)Al
 
2
Si
 
10
O
 
24
 · 7H
 
2
O
16.10.16Reyerite
(Na,K)
 
2
Ca
 
14
(Si,Al)
 
24
O
 
58
(OH)
 
8
 · 6H
 
2
O
16.10.17Lévyne
16.10.18Clinoptilolite
16.10.19Heulandite
16.10.20Gobbinsite
Na
 
4
(Ca,Mg,K
 
2
)Al
 
6
Si
 
10
O
 
32
 · 12H
 
2
O
16.10.21Stilbite
16.10.23Offretite
KCaMgAl
 
5
Si
 
13
O
 
36
 · 16H
 
2
O or near
16.10.24Perlialite
K
 
9
Na(Ca,Sr)[Al
 
2
Si
 
4
O
 
12
]
 
6
 · 15H
 
2
O
16.10.25Erionite
16.10.26Paulingite
16.10.27Sodium Dachiardite
(Na
 
2
,Ca,K
 
2
)
 
4-5
Al
 
8
Si
 
40
O
 
96
 · 26H
 
2
O
16.10.28Mazzite-Mg
K
 
2
Mg
 
2
Ca
 
1.5
Al
 
9.5
Si
 
26.5
O
 
72
 · 28H
 
2
O or near
16.10.29Roggianite
Ca
 
2
Be(OH)
 
2
Al
 
2
Si
 
4
O
 
13
 · 2.5H
 
2
O

Other Names for Dachiardite

Synonyms:
AchiarditeZeolite Mimetica
Other Languages:
German:Achiardit
D'Achiardit
Dachiardit
Russian:Дакиардит
Spanish:Achiardita
Dachiardita

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 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

Search Engines:
  • Look for Dachiardite on Google
  • Look for Dachiardite images on Google
    • External Links:
  • Dachiardite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Fabre Minerals - search for Dachiardite specimens
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Buy minerals from YourMineralCollection
  • Top quality minerals from Kristalle of California
  • Find Dachiardite on www.crystalclassics.co.uk
  • Wilensky Fine Minerals
  • Buy fine minerals and gemstones from Pala International
  • rare and unusual minerals mainly crystallized
  • The Arkenstone - Fine Minerals
  • webminerals
  • Fine and rare minerals from mintreasure.com
  • Buy RARE Minerals from Rocks of Africa
    • Jobs:
  • Mining & Geology Jobs

    • Localities for Dachiardite

    The 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.
    Hide Locality List
    (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.
    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 (Kurdzhali; Kărdžali; Kurdjali) Oblast
      • Rhodope Mts
    		[Dachiardite-Ca]
    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.
    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
    • 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 Prefecture
      • 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
    		www.mineralsocal.org
      • Riverside Co.
        • Mule Mts
          • Wiley Well District
    		www.mineralsocal.org/scfm/california/r.htm
    • Oregon
      • 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
    Mineral and/or Locality
    Search Google
     
    Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: 4th Mar 2013 10:42:41
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds