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About TacharaniteHide

Ca12Al2Si18O33 (OH)36
Crystal System:
From Gaelic "tacharan", a changeling, because the mineral breaks down into other compounds if left standing in air. (Note, however, that some specimens stored in collections for years showed no indication of any alteration when checked by powder X-ray diffraction.)
May appear visually similar to tobermorite.

Classification of TacharaniteHide

Approved, 'Grandfathered' (first described prior to 1959)

9 : SILICATES (Germanates)
H : Unclassified silicates
A : With Alkali and Alkali-earth Elements

72 : PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
3 : Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 3-, 4-, or 5-membered rings and 8-membered rings

16 : Silicates Containing Aluminum and other Metals
11 : Aluminosilicates of Ca and Mg with or without alkalis

Physical Properties of TacharaniteHide


Optical Data of TacharaniteHide

Biaxial (+)
RI values:
nα = 1.518 - 1.525 nγ = 1.530 - 1.537
Max Birefringence:
δ = 0.012
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
relatively strong

Chemical Properties of TacharaniteHide

Ca12Al2Si18O33 (OH)36
IMA Formula:
Common Impurities:

Crystallography of TacharaniteHide

Crystal System:
Cell Parameters:
a = 17.07 Å, b = 3.65 Å, c = 27.9 Å
β = 114.1°
a:b:c = 4.677 : 1 : 7.644
Unit Cell V:
1,586.80 ų (Calculated from Unit Cell)

Type Occurrence of TacharaniteHide

Other Language Names for TacharaniteHide


Common AssociatesHide

Associated Minerals Based on Photo Data:
Phillipsite21 photos of Tacharanite associated with Phillipsite on mindat.org.
Tobermorite3 photos of Tacharanite associated with Tobermorite on mindat.org.
Natrolite2 photos of Tacharanite associated with Natrolite on mindat.org.
Gyrolite1 photo of Tacharanite associated with Gyrolite on mindat.org.
Pumpellyite-(Fe2+)1 photo of Tacharanite associated with Pumpellyite-(Fe2+) on mindat.org.
Gmelinite1 photo of Tacharanite associated with Gmelinite on mindat.org.
Pectolite1 photo of Tacharanite associated with Pectolite on mindat.org.
Phillipsite-Na1 photo of Tacharanite associated with Phillipsite-Na on mindat.org.
Calcite1 photo of Tacharanite associated with Calcite on mindat.org.
Thomsonite-Ca1 photo of Tacharanite associated with Thomsonite-Ca on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.HA.10KenyaiteNa2Si22O41(OH)8 · 6H2OMon.
9.HA.25MagbasiteKBaFe3+Mg7Si8O22(OH)2F6Orth. mmm (2/m 2/m 2/m) : Cmma
9.HA.50RudenkoiteSr3(Al3.5Si3.5)O10(OH,O)8Cl2 · H2OMon.
9.HA.55FoshallasiteCa3[Si2O7] · 3H2O(?)
9.HA.60NagelschmidtiteCa7(SiO4)2(PO4)2Hex. 6 : P61
9.HA.65Caryochroite(Na,Sr)3(Fe3+,Mg)10[(O,OH)9|Ti2Si12O37] · (H2O,O,OH)17Mon.
9.HA.70JuaniteCa10Mg4Al2Si11O39 · 4H2O or near
9.HA.80OyeliteCa10Si8B2O29 · 12.5H2OOrth.
9.HA.90Tiettaite(Na,K)17FeTiSi16O29(OH)30 · 2H2OOrth. mmm (2/m 2/m 2/m) : Cmcm

Related Minerals - Dana Grouping (8th Ed.)Hide[Ca4Si6O17 · 2H2O]·(Ca·3H2O)Orth.[Ca4Si6O17 · 2H2O]·(Ca·3H2O)Mon.èrite[Ca4Si6O16(OH)2 · 2H2O]·(Ca·5H2O)Orth. · 2H2OOrth. · 18H2OTric. 1 : P1·7H2OTric. 1 : P1 · 12.5H2OOrth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

16.11.1MadisoniteCa2Mg2Al2Si3O13 or near
16.11.4Tschermakite☐(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2Mon. 2/m : B2/m
16.11.5ClintoniteCa(Mg,Al)3(Al3SiO10)(OH)2Mon. 2/m : B2/m
16.11.6JuaniteCa10Mg4Al2Si11O39 · 4H2O or near
16.11.7Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2OMon.
16.11.10Taramite{Na}{CaNa}{Mg3Al2}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
16.11.14Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2Mon. 2/m : B2/m
16.11.15Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2OMon.
16.11.15Magnesiosadanagaite{Na}{Ca2}{Mg3Al2}(Al3Si5O22)(OH)2Mon. 2/m

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 TacharaniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Sweet, J. M. (1961): Tacharanite and other hydrated calcium silicates from Portree, Isle of Skye. Mineral. Mag. 32, 745-753.
American Mineralogist (1962): 47: 173.
Cliff, G., Gard, J. A., Lorimer, G. W. & Taylor, H. F. W. (1975): Tacharanite. - Mineralogical Magazine: 40: 113-126.
American Mineralogist (1976): 61: 1055.
Mineralogical Magazine (1978): 42: 383.

Internet Links for TacharaniteHide

Localities for TacharaniteHide

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.
  • Tasmania
    • Burnie city
      • Oonah
        • Campbell Range
Mathew Latham coll.; Information to Kim Macdonald from Mathew & Elizabeth Latham, North West Tasmanian Mineral Club
      • Ridgley
R Bottrill coll.
    • Central Highlands municipality
      • Liawenee
Bottrill & Baker (in prep) Catalogue of minerals of Tasmania
    • Circular Head municipality
      • Cape Grim district
http://www.crocoite.com/locationbulletins/part1/zeolites.pdf; Tschernich, R. (1992): Zeolites of the World, p.49
      • Marrawah district
        • Redpa
    • Kentish municipality
      • Moina - Middlesex District
Bottrill & Baker (in prep) Catalogue of minerals of Tasmania
    • Meander Valley municipality
      • Upper Mersey Valley
Anderson, P. (1984), Zeolites from Gads Hill, Tasmania
  • Styria
    • Bad Radkersburg
      • Klöch
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    • Feldbach
      • Mühldorf
Postl, W., Taucher, J. & Moser, B. (1996): Neue Mineralfunde im oststeirischen Vulkangebiet. Mitt. Abt. Miner. Landesmuseum Joanneum, 60/61, 3-76.
  • British Columbia
    • Cariboo Mining Division
      • 100 Mile House
Tschernich, R. (1992): Zeolites of the World, p.51
  • Québec
    • Estrie
      • Les Sources RCM
        • Asbestos
HORVÁTH, L., PFENNINGER-HORVÁTH, E. and SPERTINI, F. (2013) The Jeffrey mine, Asbestos, Québec, Canada: A mineralogical review. Mineralogical Record, 44, 375-417.
  • Aisén del General Carlos Ibáñez del Campo Region
    • Aisén Province (Aysén Province)
Aguirre, L., Dominguez-Bella, S., Morata, D., Wittke, O. (1998) An occurrence of tobermorite in Tertiary basalts from Patagonia, Chile. The Canadian Mineralogist, 36, 1149-1155.
  • Auvergne-Rhône-Alpes
    • Puy-de-Dôme
      • Brousse
Leconte J. (2015) La carrière de Montboissier, Brousse, Puy-de-Dôme. In ʺLa revue des Micromonteursʺ n°23 – p.33-54.
      • Saint-Dier-d'Auvergne
        • Saint-Jean-des-Ollières
Patrice Queneau Collection
  • Occitanie
    • Aveyron
      • Espalion
Boutry C., Pelisson P., Pillard F. (1986), Les zéolites d'Espalion, Le Cahier des Micromonteurs, n°2, pp: 3-7
  • Hesse
    • Vogelsberg
      • Ortenberg
Kolitsch, U. (1997): Tacharanit vom Gaulsberg bei Ortenberg (Vogelsberg, Hessen). Mineralien-Welt 8 (2), 25-26
  • Lower Saxony
    • Göttingen
      • Adelebsen
Koritnig, S. (1972). Gyrolith, Okenit und Tacharanit als metasomatische Reaktionsprodukte aus dem Basaltvorkommen der Bramburg bei Göttingen, Deutschland. Contrib. Mineral. Petrol. 35, 293-301. (in German)
  • Rhineland-Palatinate
    • Adenau
      • Hoffeld
Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag München, 1987
    • Hillesheim
      • Zilsdorf
Hentschel, G.,Begleitmineralien des Basaltes vom Arensberg bei Zilsdorf/Eifel, Notizbl. Hess. L.-Amt Bodenforsch., 101, 310-316, 1973
  • Veszprém Co.
    • Balaton Uplands
      • Bakony Mts
        • Sümegprága
      • Tapolcai Basin
        • Uzsa (Uzsabánya)
  • Negev
Gross, S. (1977): The Mineralogy of the Hatrurim Formation, Israel. Geological Survey of Israel, Bulletin no. 70, 80 pp.
      • Gurim anticline
Sokol, E. V., Gaskova, O. L., Kozmenko, O. A., Kokh, S. N., Vapnik, E. A., Novikova, S. A., & Nigmatulina, E. N. (2014, November). Clastic dikes of the Hatrurim basin (western flank of the Dead Sea) as natural analogues of alkaline concretes: Mineralogy, solution chemistry, and durability. In Doklady Earth Sciences (Vol. 459, No. 1, pp. 1436-1441). Pleiades Publishing.
  • Liguria
    • Genova Province
      • Campoligure
        • Pracaban Mt.
Antofilli, Borgo, Palenzona, 1985. I nostri minerali. Geologia e mineralogia in Liguria. Edizioni Melita, La Spezia.
      • Tiglieto
        • Olbicella
Cortesogno L., Lucchetti G., Penco A.M. - 1975 - Associazioni a zeoliti nel "Gruppo di Voltri" : caratteristiche mineralogiche e loro significato - rend. S.I.M.P. - Milano, vol. 31, n.2 pp. 673-710
  • Sicily
    • Catania Province
      • Northern Iblean plateau
Sicurella, G., Russo, S., Ciriotti, M.E., Blass, G. (2010): Mineralogia della formazione di Monte Caliella, Palagonia (Catania, Sicilia). Micro (località), 2/2010, 371-408
Sicurella, G., Russo, S., Ciriotti, M.E., Blass, G. (2010): Mineralogia della formazione di Monte Caliella, Palagonia (Catania, Sicilia). Micro (località), 2/2010, 371-408.
  • Tuscany
    • Florence Province
Batacchi C., Prosperi B., Ciriotti M.E., Fassina B. & Ceccantini L. (2016) Ferripirofillite (primo ritrovamento italiano), pirofillite e tacharanite dal complesso ofiolitico dell'Impruneta, Toscana. Micro, 1/2016, 26-32.
  • Veneto
    • Padova Province
      • Euganean Hills (Euganei Hills)
        • Cinto Euganeo
          • Faedo
            • Monte Fasolo
Fabris, L., Guastoni, A. (2014) Provincia di Padova. In: Zorzi, F., Boscardin, M., (eds.), Minerali del Veneto. Alla scoperta dei tesori della nostra regione. Museo di Storia Naturale e Archeologia di Montebelluna - Treviso, Cierre Edizioni, Sommacampagna, pages 121-141; Zorzi, F. (2014) Percorso nel Padovano. Monte Fasolo, Monte Rusta, Monte Gemola. In: Zorzi, F., Boscardin, M., (eds.), Minerali del Veneto. Alla scoperta dei tesori della nostra regione. Museo di Storia Naturale e Archeologia di Montebelluna - Treviso, Cierre Edizioni, Sommacampagna, pages 293-299.
    • Verona Province
      • Brentino Belluno
        • Lagarina Valley
          • Mt. Baldo
Boscardin M. (2014): Provincia di Verona. In: Zorzi F., Boscardin M. (eds.), Minerali del Veneto. Alla scoperta sei tesori della nostra regione. Museo di Storia Naturale e Archeologia di Montebelluna - Treviso, Cierre Edizioni, Sommacampagna, 153-171.
    • Vicenza Province
      • Cornedo Vicentino
        • Spagnago
Boscardin M.,Daleffe A.,Rocchetti I., Zordan A. (2011) " Minerali del Vicentino - Aggiornamenti, località e nuove determinazioni " Museo di Archeologia e Scienze Naturali “G. Zannato” – Montecchio Maggiore (Vicenza), pp.183; - Boscardin M.,Daleffe A.,Rocchetti I., Zordan A. (2011) " Minerali del Vicentino - Aggiornamenti, località e nuove determinazioni " Museo di Archeologia e Scienze Naturali “G. Zannato” – Montecchio Maggiore (Vicenza), pp.183
  • Honshu Island
    • Chubu region
      • Shizuoka prefecture
Alfredo Petrov - unpublished document (2007)
  • Shikoku Island
    • Kochi Prefecture
      • Kochi City
        • Engyouji (Engyoji)
Minakawa and Noto (1985) Kobutsu-Gakkai Koen-Yoshi, 90.
        • Rendai
Mineralogical Journal Vol. 13 (1986) , No. 6 pp368-375
  • 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.
  • Northern Region
    • Murmanskaya Oblast'
      • Kovdor Massif
M.Moiseev data
  • Urals Region
    • Middle Urals
      • Sverdlovskaya Oblast'
        • Sysert' District
          • Polevskoi (Polevskoi Zavod)
Zadov, A. E.; Grabezhev, A. I.; Pertsev, N. N.; Chukanov, N. V.; Pribavkin, S. V. (2006): Tobermorite-plombierite metasomatites of the Gumeshevsk skarn-porphyry copper deposit, Middle Urals. Doklady Earth Sciences 407A, 495-497. ; Grabezhev, A. I., Pertsev, N. N., Zadov, A. E., Pribavkin, S. V., & Murzin, V. V. (2007). Calcic hydrosilicate metasomatic rocks at the Gumeshevsk skarn-porphyry copper deposit in the central Urals, Russia. Petrology, 15(5), 514-522.
  • Catalonia
    • Barcelona
      • Maresme
        • Fogars de la Selva
Bareche, E. (2005) "Els minerals de Catalunya. Segle XX" Grup Mineralògic Català, Barcelona, 269 pages.
  • Northern Ireland
    • Co. Antrim
      • Glenoe
Henmi, C., Kusachi, I., Henmi, K., Sabine, P.A., and Young, B.R. (1973) A new mineral bicchulite, the natural analogue of gehlenite hydrate, from Fuka, Okayama Prefecture, Japan and Carneal, County Antrim, Northern Ireland, Mineralogical Journal, 7, 243-251.
  • Scotland
    • Highland
      • Isle of Skye
        • Trotternish
Sweet, J. M. (1961): Tacharanite and other hydrated calcium silicates from Portree, Isle of Skye. Mineralogical Magazine 32, 745-753; [Clark, 1993 - "Hey's Mineral Index", p681]
  • Idaho
    • Adams Co.
Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated
    • Idaho Co.
      • Skookumchuck Creek
Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated
  • Oregon
    • Grant Co.
      • Kimberley
Tschernich, R. (1992): Zeolites of the World, 118
      • Monument
Rudy Tschernich Zeolite Collection
      • North Fork John Day River
Micro Probe (1989) Volume VI Number 8 pp 10-13
      • Ritter
Rudy Tschernich Zeolite Collection
Micro Probe Volume VII Number 8 Fall 1993
    • Wheeler Co.
      • Spray
Micro Probe VolumeVII Number 3 Spring 1996
      • Twickenham
Rudy Tschernich Zeolite Collection
  • Virginia
    • Highland Co.
      • Doe Hill
Minerals of Virginia 1990 by R. V. Dietrich; R. S. Mirchell and W. F. Giannini (1987) Tacharanite in an amygdaloidal basalt, Highland County, Virginia. Mineralogical Magazine 51:467-468
    • Nelson Co.
      • Piney River
Minerals of Virginia 1990 by R. V. Dietrich
Mineral and/or Locality  
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