SUPPORT US. If is important to you, click here to donate to our Fall 2019 fundraiser!
Log InRegister
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 ElementsBooks & Magazines
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
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography


This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About WellsiteHide

Horace Lemuel Wells
(K,Ba,Ca,K2)Al2Si6O16 · 6H2O
Colorless, white
4 - 4½
Specific Gravity:
Crystal System:
Wellsite is a barian Phillipsite-Ca. Originally described from from Buck Creek Mine (Cullakenee Mine), Buck Creek, Clay Co., North Carolina, USA by Joseph Hyde Pratt and Henry W. Foote in 1897 in honor of Horace L. Wells [October 5, 1855 New Britain, Connecticut, USA - December 19, 1924 New Haven, Connecticut, USA]. Wells was an important mineral chemist and educator. He named the new species beryllonite, but is especially noted for his research on the chemistry of cesium and rubidium using lepidolite from Mount Mica, Paris, Maine and pollucite from Mount Rubellite, Hebron, Maine, USA. Wells also researched granite pegmatites, phosphate minerals, nitrates, thallium, selenium, tellurium, halogens, and cyanides. He also authored books on chemical calculations and analytical techniques.
A variety of Phillipsite

Old name for Ba-bearing to -rich phillipsite. Fairly common in various rocks. The Ba-dominant endmember is harmotome.

Usually occurs as small, white to colorless square twinned prisms.

Classification of WellsiteHide

Redefined by the IMA

16 : Silicates Containing Aluminum and other Metals
12 : Aluminosilicates of Sr, Ba and Zn

Pronounciation of WellsiteHide

PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of WellsiteHide

Transparent, Translucent
Colorless, white
4 - 4½ on Mohs scale
Distinct on the {010}, indistinct on the {001}
2.25 g/cm3 (Measured)    

Optical Data of WellsiteHide

Biaxial (+)
RI values:
nα = 1.499 nβ = 1.501 nγ = 1.504
Measured: 45°
Max Birefringence:
δ = 0.005
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:

Chemical Properties of WellsiteHide

(K,Ba,Ca,K2)Al2Si6O16 · 6H2O
Common Impurities:

Crystallography of WellsiteHide

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:
Cell Parameters:
a = 9.91 Å, b = 14.24 Å, c = 8.7 Å
β = 124.65°
a:b:c = 0.696 : 1 : 0.611
Unit Cell V:
1,009.98 ų (Calculated from Unit Cell)
Rod-like crystals with square cross-section

X-Ray Powder DiffractionHide

Powder Diffraction Data:
8.1 Å(30)
7.2 Å(30)
6.4 Å(30)
5.0 Å(20)
4.07 Å(80b)
3.153 Å(100b)
2.903 Å(20)
2.688 Å(80b)
2.501 Å(30)
2.342 Å(30b)
2.217 Å(10)
2.131 Å(30)
1.939 Å(30)
1.802 Å(10)
1.762 Å(20)
1.699 Å(50)
1.667 Å(10)
1.635 Å(10)
1.585 Å(10)
1.528 Å(30)
1.474 Å(20)
1.420 Å(10b)
1.365 Å(50)
1.321 Å(20)
1.263 Å(20b)
1.209 Å(10b)
1.168 Å(20b)
ICDD 12-541 (Vezna, Czech Republic)

First Recorded Occurrence of WellsiteHide

Other Language Names for WellsiteHide


Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Wellsite associated with AnalcimeNa(AlSi2O6) · H2O
1 photo of Wellsite associated with Phacolite
1 photo of Wellsite associated with Heulandite subgroup

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

16.12.4CelsianBa(Al2Si2O8)Mon. 2/m
16.12.6CymriteBaAl2Si2(O,OH)8 · H2OMon.
16.12.7EdingtoniteBa[Al2Si3O10] · 4H2O
16.12.8BanalsiteNa2BaAl4Si4O16Orth. mm2 : Iba2
16.12.9Harmotome(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2OMon. 2/m : P21/m
16.12.12ArmeniteBaCa2Al6Si9O30 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pnna
16.12.14Merlinoite(K,Na)5(Ca,Ba)2Al9Si23O64 · 23H2OOrth.
16.12.15Anandite(Ba,K)(Fe2+,Mg)3((Si,Al,Fe)4O10)(S,OH)2Mon. 2/m : B2/b
16.12.17SauconiteNa0.3Zn3((Si,Al)4O10)(OH)2 · 4H2OMon.
16.12.19HendricksiteK(Zn,Mg,Mn2+)3(AlSi3O10)(OH)2Mon. 2/m : B2/m
16.12.20Baileychlore(Zn,Fe2+,Al,Mg)6(Si,Al)4O10(OH)8Tric. 1

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 WellsiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Journal of Science (1897): 153: 443.
Can. Mineral. 35 (1997) 1571
Mineralogical Magazine (1998): 62: 571.

Internet Links for WellsiteHide

Localities for WellsiteHide

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.
  • Burgenland
    • Güssing
Natural History Museum Vienna collection; Taucher, J. & Hollerer, Chr. (1993)
  • Carinthia
    • St Paul im Lavanttal
      • Kollnitz
G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
  • Lower Austria
    • Waldviertel
      • Persenbeug-Gottsdorf
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
  • Styria
    • Bad Gleichenberg
      • Wilhelmsdorf
Postl, W., Taucher, J. & Moser, B. (1996): Neue Mineralfunde im oststeirischen Vulkangebiet. Mitt. Abt. Miner. Landesmuseum Joanneum, 60/61, 3-76.
Czech Republic
  • Ústí nad Labem Region
    • Litoměřice District
M.Radoň-Významné mineralogické lokality Českého středohoří (čas.Minerál 2/2009)
  • Vysočina Region
    • Žďár nad Sázavou District
      • Věžná
Canadian Mineralogist, Vol 17, 1979, pp. 583-588.; Cerny, P., Hawthorne, F. C., Laflamme, J. H. G., & Hinthorne, J. (1979). Stibiobetafite, a new member of the pyrochlore group from Vezna, Czechoslovakia. Canadian Mineralogist, 17, 583-588.
Petr Pauliš (2001): Nejzajímavější mineralogická naleziště Moravy a Slezska. Kuttna, Kutná Hora.; Mineralogical Magazine 1963 33 : 450-457
  • Auvergne-Rhône-Alpes
    • Ardèche
      • Privas
Ch. Robert : "Barian phillipsite and strontian chabazite from the Plateau des Coirons, Ardèche, France", Bull. Minéral., 1988, 111, pp. 671-677, France.
      • Villeneuve-de-Berg
Ch. Robert : "Barian phillipsite and strontian chabazite from the Plateau des Coirons, Ardèche, France", Bull. Minéral., 1988, 111, pp. 671-677, France.
  • Hesse
    • Vogelsbergkreis
      • Ortenberg
  • Veneto
    • Verona Province
      • Roncà
Galli, E. (1972) La phillipsite barifera («wellsite») di M. Calvarina (Verona). Periodico di Mineralogia, 41,1, 23-33; Boscardin, M. (1975) Informazioni di mineralogia italiana. 56) Wellsite del Veronese. Notizie del Gruppo Mineralogico Lombardo, 6, 2 (giugno 1975), 29; Boscardin, M. (2014) Provincia di Verona. In: Zorzi, F., and 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.
Capolupi, G.F. (1995) Wellsite di Santa Margherita di Roncà. Studi e Ricerche, Associazione Amici del Museo, Museo Civico "G. Zannato", Montecchio Maggiore, 2, 30-31.
World of Stones v.9
    • Simferopol area
      • Petropavlovka Village area
A. Tischenko. Minerals of the Crimea - World of stones, 1996, #9, p. 9-18
      • Ukrainka Village area (Kurtsy)
- Dvoichenko P.A. The minerals of Crimea (1914) - Zapiski Krymskogo obshchestva estestvoispytatelei (Proceeding of the Crimea Society of Naturalistes), 1914, vol. 4, p. 1-208 (Rus.) - Popov S.P. Mineralogy of the Crimea (1938). - M.-L., AN SSSR, 1938, 352 p. (Rus.)
  • Northern Ireland
    • Ulster
      • Co. Antrim
Adair, I. (1986) pers. comm.; Ryback, G., Nawaz, R. and Farley, E. (1988) Seventh Supplementary List of British Isles Minerals (Irish). Mineralogical Magazine, vol. 52, n° 365, pp. 267-274.
  • California
    • Trinity Co.
      • Coastal Range
        • Mad River Rock
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 383;; Tony Kampf (PXRD analysis)
  • Colorado
    • Mineral Co.
      • Wolf Creek Pass
Rocks & Minerals 79:5 pp316-324
  • North Carolina
    • Clay Co.
      • Buck Creek
Pratt,Joseph Hyde, and Foote,H.W.,1897,On Wellsite ,A New Mineral(Clay County,North Carolina,American Journal Of Science,Series 4,Vol 3.June 1897,P.443-448
  • Oregon
    • Clackamas Co.
Miklancic collection #1742/77
Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © and the Hudson Institute of Mineralogy 1993-2019, except where stated. Most political location boundaries are © OpenStreetMap contributors. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 18, 2019 07:15:02 Page generated: October 14, 2019 16:04:17
Go to top of page