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 StringhamiteHide

CaCu(SiO4) · H2O
Azure blue
Specific Gravity:
3.16 - 3.18
Crystal System:
For Bronson Ferrin Stringham (1907-1968) chair of department of mineralogy, University of Utah.
This page provides mineralogical data about Stringhamite.

Classification of StringhamiteHide

Approval Year:

9 : SILICATES (Germanates)
A : Nesosilicates
E : Nesosilicates with additional anions (O,OH,F,H2O); cations in tetrahedral [4] coordination

78 : Unclassified Silicates
1 : Miscellaneous

14 : Silicates not Containing Aluminum
2 : Silicates of Cu

Physical Properties of StringhamiteHide

Transparent, Translucent
Azure blue
3.16 - 3.18 g/cm3 (Measured)    3.67 g/cm3 (Calculated)

Optical Data of StringhamiteHide

Biaxial (+)
RI values:
nα = 1.709 nβ = 1.717 nγ = 1.729
Measured: 80° , Calculated: 80°
Max Birefringence:
δ = 0.020
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
r > v weak
alpha - light grey blue
beta - light blue
gamma - dark blue

Chemical Properties of StringhamiteHide

CaCu(SiO4) · H2O
Common Impurities:

Crystallography of StringhamiteHide

Crystal System:
Cell Parameters:
a = 5.02 Å, b = 16.07 Å, c = 5.3 Å
β = 102.58°
a:b:c = 0.312 : 1 : 0.33
Unit Cell V:
417.29 ų (Calculated from Unit Cell)
All crystals are multiplied twinned

Crystallographic forms of StringhamiteHide

Crystal Atlas:
Image Loading
Click on an icon to view
Stringhamite - {101}, {011}, modified
3d models and HTML5 code kindly provided by www.smorf.nl.

Edge Lines | Miller Indices | Axes

Opaque | Translucent | Transparent

Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation

Type Occurrence of StringhamiteHide

Geological Setting of Type Material:
In fractures near a contact between quartz monzonite and limestone

Synonyms of StringhamiteHide

Other Language Names for StringhamiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
13 photos of Stringhamite associated with XonotliteCa6(Si6O17)(OH)2
12 photos of Stringhamite associated with Tobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)
9 photos of Stringhamite associated with WhelaniteCu2+2Ca6[Si6O17(OH)](CO3)(OH)3 · 2H2O
4 photos of Stringhamite associated with KinoiteCa2Cu2(H2O)2[Si3O10]
3 photos of Stringhamite associated with AndraditeCa3Fe3+2(SiO4)3
2 photos of Stringhamite associated with GrossularCa3Al2(SiO4)3
1 photo of Stringhamite associated with HematiteFe2O3
1 photo of Stringhamite associated with ScawtiteCa7(Si3O9)2CO3 · 2H2O

Related Minerals - Nickel-Strunz GroupingHide

9.AE.05BerylliteBe3(SiO4)(OH)2 · H2OOrth.
9.AE.10EuclaseBeAl(SiO4)(OH)Mon. 2/m : P21/b
9.AE.15SverigeiteNaMnMgSnBe2(SiO4)3(OH)Orth. mmm (2/m 2/m 2/m) : Imma
9.AE.30ClinohedriteCaZn(SiO4) · H2OMon. m : Bb
9.AE.40Katoptrite(Mn2+,Mg)13(Al,Fe3+)4Sb5+2(SiO4)2O20Mon. 2/m : B2/m
9.AE.50SphaerobertranditeBe3(SiO4)(OH)2Mon. 2/m : P21/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.2.1DioptaseCuSiO3 · H2OTrig. 3 : R3
14.2.2ShattuckiteCu5(Si2O6)2(OH)2Orth. mmm (2/m 2/m 2/m)
14.2.3PlancheiteCu8(Si8O22)(OH)4 · H2OOrth. mmm (2/m 2/m 2/m)
14.2.4GilaliteCu5Si6O17 · 7H2OMon.
14.2.5ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2OOrth.
14.2.7ReinhardbraunsiteCa5(SiO4)2(OH,F)2Mon. 2/m : P21/b
14.2.8CuprorivaiteCaCuSi4O10Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
14.2.9KinoiteCa2Cu2(H2O)2[Si3O10]Mon. 2/m : P21/m
14.2.11ApachiteCu9Si10O29 · 11H2OMon.

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 StringhamiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Hindman, J. R. (1976): Stringhamite, a new calcium copper siliate from Utah. American Mineralogist (1976): 61: 189-192.
American Mineralogist (1986): 71: 231.
Tschermaks Mineralogische und Petrographische Mitteilungen (1985): 34: 15-24.

Internet Links for StringhamiteHide

Localities for StringhamiteHide

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.
  • Atacama
    • Copiapó Province
      • Punta del Cobre District
        • Candelaria Copper mining complex
Bob Jenkins & M. Dini collections
Am.Min. 61:189
  • Okayama Prefecture
    • Takahashi City
      • Bicchu-cho (Bitchu-cho)
        • Fuka
Nishimura et al (2001) Koubutsu-Gakkai Kou'en-Youshi, 114.
  • Arizona
    • Gila Co.
      • Dripping Spring Mountains
        • Banner Mining District
          • Christmas
Handbook of Mineralolgy Vol. II Silica, Silicates, Part 2 pg.760. Anthony, Bideaux, Bladh, Nichols.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 384-385.
    • Pima Co.
      • Sierrita Mountains
        • Pima Mining District (Olive Mining District; Mineral Hill Mining District; Twin Buttes Mining District)
          • Twin Buttes
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 268, 385.
  • California
    • Inyo Co.
      • Lee Mining District
        • Nelson Range
Kampf, A. R., Mills, S. J., Merlino, S., Pasero, M., McDonald, A. M., Wray, W. B., & Hindman, J. R. (2012). Whelanite, Cu2Ca6 [Si6O17 (OH)](CO3)(OH) 3 (H2O) 2, an (old) new mineral from the Bawana mine, Milford, Utah. American Mineralogist, 97(11-12), 2007-2015.
    • Riverside Co.
      • Crestmore
Hindman, J.R. (1976) Stringhamite, a new hydrous calcium silicate from Utah. American Mineralogist: 61: 189-192; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 515.
  • Utah
    • Beaver Co.
      • Rocky Range
        • Rocky Mining District
Kampf, A. R., Mills, S. J., Merlino, S., Pasero, M., McDonald, A. M., Wray, W. B., & Hindman, J. R. (2012). Whelanite, Cu2Ca6 [Si6O17 (OH)](CO3)(OH) 3 (H2O) 2, an (old) new mineral from the Bawana mine, Milford, Utah. American Mineralogist, 97(11-12), 2007-2015.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2020, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: March 30, 2020 18:30:29 Page generated: March 8, 2020 01:44:05
Go to top of page