Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Dachiardite-Ca

A valid IMA mineral species - grandfathered
This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About Dachiardite-CaHide

01912660014948941375483.jpg
Antonio D'Achiardi
Formula:
(Ca,Na2,K2)5Al10Si38O96 · 25H2O
Colour:
Colorless
Lustre:
Vitreous
Hardness:
4 - 4½
Specific Gravity:
2.165 - 2.206
Crystal System:
Monoclinic
Name:
Named after Antonio D'Achiardi (1839–1902), Professor of Mineralogy, Universitá di Pisa, Italy, who first described the mineral discovered by his son in a granitic pegmatite. Originally named only dachiardite, it was renamed in 1997 as dachiardite-Ca by the IMA.
The calcium-dominant member of the Dachiardite minerals of the Zeolite Group.


Unique IdentifiersHide

Mindat ID:
6895
Long-form identifier:
mindat:1:1:6895:2
GUID
(UUID V4):
6506cd64-e495-4fe4-9663-5931a9956687

IMA Classification of Dachiardite-CaHide

Approved, 'Grandfathered' (first described prior to 1959)
IMA status notes:
Renamed by the IMA
IMA Formula:
Ca2(Si20Al4)O48 · 13H2O
First published:
1906
Approval history:
Renamed Dachiardite-Ca in 1997 (IMA special procedure)

Classification of Dachiardite-CaHide

9.GD.40

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
D : Chains of 6-membered rings – tabular zeolites
77.1.24.2

77 : TECTOSILICATES Zeolites
1 : Zeolite group - True zeolites

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
Dac-CaIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of Dachiardite-CaHide

Vitreous
Transparency:
Transparent
Colour:
Colorless
Streak:
White
Hardness:
4 - 4½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
On {001}, {100}
Fracture:
Irregular/Uneven, Conchoidal
Density:
2.165 - 2.206 g/cm3 (Measured)    2.1395(15) g/cm3 (Calculated)

Optical Data of Dachiardite-CaHide

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

Chemistry of Dachiardite-CaHide

Mindat Formula:
(Ca,Na2,K2)5Al10Si38O96 · 25H2O

Crystallography of Dachiardite-CaHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 18.625 Å, b = 7.508 Å, c = 10.247 Å
β = 108.056°
Ratio:
a:b:c = 2.481 : 1 : 1.365
Unit Cell V:
1,362.34 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Typically as bladed prismatic crystals, commonly fibrous. Radiating aggregates.
Twinning:
Material from Elba exhibits twinning on {110} as rare cyclical eightlings.

Crystal StructureHide

Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File    Best | x | y | z | a | b | c
Rotation
Stop | Start
Labels
Console Off | On | Grey | Yellow
IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0006381Dachiardite-CaQuartieri S, Vezzalini G, Alberti A (1990) Dachiardite from Hokiya-dake: evidence of a new topology European Journal of Mineralogy 2 187-1931990Hokiya-dake, Japan0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.452 Å(100)
3.204 Å(100)
1.873 Å(75)
8.90 Å(50)
6.91 Å(50)
4.97 Å(50)
4.88 Å(50)

Geological EnvironmentHide

Type Occurrence of Dachiardite-CaHide

Place of Conservation of Type Material:
Natural History Museum, Paris, France, 109.1084.
National Museum of Natural History (Smithsonian), Washington, D.C., USA, 123998.
Reference:
D'Achiardi, G. (1906) Zeoliti del filone della speranza presso S. Piero in Campo (Elba). Atti della Societa Toscana di Scienze Naturali. Processi Verbali: 22: 150-165.

Other Language Names for Dachiardite-CaHide

Relationship of Dachiardite-Ca to other SpeciesHide

Other Members of this group:
Dachiardite-KK4(Si20Al4O48) · 13H2OMon.
Dachiardite-Na(Na2,Ca,K2)5Al10Si38O96 · 25H2OMon. 2/m : B2/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
31 photos of Dachiardite-Ca associated with Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
19 photos of Dachiardite-Ca associated with Dachiardite-Na(Na2,Ca,K2)5Al10Si38O96 · 25H2O
11 photos of Dachiardite-Ca associated with Clinoptilolite-CaCa3(Si30Al6)O72 · 20H2O
7 photos of Dachiardite-Ca associated with ChalcedonySiO2
5 photos of Dachiardite-Ca associated with SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
4 photos of Dachiardite-Ca associated with Ferrierite-Na(Na,K)5(Si31Al5)O72 · 18H2O
3 photos of Dachiardite-Ca associated with Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
2 photos of Dachiardite-Ca associated with PyriteFeS2
1 photo of Dachiardite-Ca associated with Clinoptilolite SubgroupM3-6(Si30Al6)O72 · 20H2O
1 photo of Dachiardite-Ca associated with Phillipsite-CaCa3(Si10Al6)O32 · 12H2O

Related Minerals - Strunz-mindat GroupingHide

9.GD.05Gmelinite-CaCa2(Si8Al4O24] · 11H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
9.GD.05Gmelinite-KK4(Si8Al4O24) · 11H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
9.GD.05Gmelinite-NaNa4(Si8Al4O24] · 11H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
9.GD.10WillhendersoniteKCa[Al3Si3O12] · 5H2OTric. 1 : P1
9.GD.10Chabazite-Ca(Ca,K2,Na2)2[Al2Si4O12]2 · 12H2OTric. 1 : P1
9.GD.10Chabazite-K(K2,Ca,Na2,Sr,Mg)2[Al2Si4O12]2 · 12H2OTrig. 3m (3 2/m) : R3m
9.GD.10Chabazite-Na(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2OTrig. 3m : R3m
9.GD.10Chabazite-SrSr2[Al2Si4O12]2 · 12H2OTrig. 3m (3 2/m) : R3m
9.GD.10Chabazite-Mg(Mg0.7K0.5Ca0.5Na0.1)[Al3Si9O24] · 10H2O Trig. 3m (3 2/m) : R3m
9.GD.15Lévyne-Ca(Ca,Na2,K2)[Al2Si4O12] · 6H2OTrig. 3m (3 2/m) : R3m
9.GD.15Lévyne-Na(Na2,Ca,K2)[Al2Si4O12] · 6H2OTrig. 3m (3 2/m) : R3m
9.GD.20Bellbergite(K,Ba,Sr)2Sr2Ca2(Ca,Na)4[Al3Si3O12]6 · 30H2OHex.
9.GD.20Erionite-Ca(Ca,K2,Na2)2[Al4Si14O36] · 15H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
9.GD.20Erionite-K(K2,Ca,Na2)2[Al4Si14O36] · 15H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
9.GD.20Erionite-Na(Na2,K2,Ca)2[Al4Si14O36] · 15H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
9.GD.25OffretiteKCaMg(Si13Al5)O36 · 15H2OHex. 6 m2 : P6m2
9.GD.25Wenkite(Ba,K)4(Ca,Na)6[(Si,Al)20O39(OH)2](SO4)3 · 0.5H2OHex. 6 m2 : P62m
9.GD.30Faujasite-Ca(Ca,Na2,Mg)3.5[Al7Si17O48] · 32H2OIso. m3m (4/m 3 2/m) : Fd3m
9.GD.30Faujasite-Mg(Mg,Na2,Ca)3.5[Al7Si17O48] · 32H2OIso. m3m (4/m 3 2/m) : Fd3m
9.GD.30Faujasite-Na(Na2,Ca,Mg)3.5[Al7Si17O48] · 32H2OIso. m3m (4/m 3 2/m) : Fd3m
9.GD.35MaricopaitePb7Ca2(Si,Al)48O100 · 32H2OOrth.
9.GD.35Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2OOrth.
9.GD.40Dachiardite-KK4(Si20Al4O48) · 13H2OMon.
9.GD.40Dachiardite-Na(Na2,Ca,K2)5Al10Si38O96 · 25H2OMon. 2/m : B2/m
9.GD.45EpistilbiteCaAl2Si6O16 · 5H2OMon.
9.GD.50Ferrierite-K(K,Na)5(Si31Al5)O72 · 18H2OOrth. mmm (2/m 2/m 2/m) : Immm
9.GD.50Ferrierite-Mg[Mg2(K,Na)2Ca0.5](Si29Al7)O72 · 18H2OOrth. mmm (2/m 2/m 2/m) : Pnnm
9.GD.50Ferrierite-Na(Na,K)5(Si31Al5)O72 · 18H2OMon. 2/m
9.GD.50Ferrierite-NH4(NH4,Mg0.5)5(Al5Si31O72) · 22H2OOrth. mmm (2/m 2/m 2/m) : Immm
9.GD.55BikitaiteLiAlSi2O6 · H2OTric. 1 : P1

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.

Internet Links for Dachiardite-CaHide

References for Dachiardite-CaHide

Reference List:

Localities for Dachiardite-CaHide

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 references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Bulgaria
 
  • Kardzhali Province
    • Momchilgrad Municipality
Gellens et al. (1982)
Encheva
Canada
 
  • Québec
    • Montréal
176-178. +1 other reference
Czech Republic
 
  • Liberec Region
    • Liberec District
Pauliš et al. (2008)
      • Šimonovice
        • Rašovka
Pauliš P. et al.: Dachiardit-Ca z ...
  • Pardubice Region
    • Svitavy District
      • Svojanov (Swojanow)
Rychlý
  • Ústí nad Labem Region
    • Děčín District
      • Krásná Lípa
P.Pauliš et al. (2014)
Germany
 
  • Hesse
    • Darmstadt
      • Darmstadt-Dieburg
        • Mühltal
          • Nieder-Ramstadt
Belendorff (2021)
Hungary
 
  • Pest County
    • Szob District
      • Márianosztra
Szakáll-Gatter-Szendrei: Mineral ...
Italy
 
  • Tuscany
    • Livorno Province
      • Campo nell'Elba
G. D'Achiardi (1905)
Orlandi et al. (1997)
Orlandi et al. (1997) +1 other reference
Japan
 
  • Kagoshima Prefecture
    • Aira District
Quartieri et al. (1990)
  • Nagano Prefecture
    • Nagano City
      • Matsushiro
        • Toyosaka
Quartieri et al. (1990)
Slovakia
 
  • Košice Region
    • Trebišov District
Myšľan P et al. (2022)
Myšľan P et al. (2022)
USA
 
  • Oregon
    • Tillamook County
      • Netarts
Micro Probe Volume IX Number 3
  • Washington
    • Wahkiakum County
      • Altoona
Micro Probe Volume IX Number 3 Spring ...
Rudy Tschernich Zeolite Collection
 
Mineral and/or Locality  
Mindat Discussions Facebook Logo Instagram Logo Discord Logo
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: March 19, 2024 06:47:17 Page updated: March 15, 2024 21:19:26
Go to top of page