Mindat Logo

Stringhamite

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



Formula:
CaCu(SiO
 
4
) · H
 
2
O
System:MonoclinicColour:Azure blue
Name:For Bronson Ferrin Stringham (1907-1968) chair of department of mineralogy, University of Utah.
This page provides mineralogical data about Stringhamite.

Classification of Stringhamite

IMA status:Approved 1974
Strunz 8th edition ID:8/B.03-40
Nickel-Strunz 10th (pending) edition ID:9.AE.35

9 : SILICATES (Germanates)
A : Nesosilicates
E : Nesosilicates with additional anions (O,OH,F,H2O); cations in tetrahedral [4] coordination
Dana 8th edition ID:78.1.9.1

78 : Unclassified Silicates
1 : Miscellaneous
Hey's CIM Ref.:14.2.10

14 : Silicates not Containing Aluminum
2 : Silicates of Cu
mindat.org URL:http://www.mindat.org/min-3802.html
Please feel free to link to this page.

Type Occurrence of Stringhamite

Type Locality:Bawana Mine (Old Hickory mine), Rocky District, Rocky Range, Beaver Co., Utah, USA
Year of Discovery:1974
Geological Setting of type material:In fractures near a contact between quartz monzonite and limestone

Physical Properties of Stringhamite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent, Translucent
Colour:Azure blue
Density (measured):3.16 - 3.18 g/cm3
Density (calculated):3.67 g/cm3

Crystallography of Stringhamite

Crystal System:Monoclinic
Cell Parameters:a = 5.02Å, b = 16.07Å, c = 5.3Å
β = 102.58°
Ratio:a:b:c = 0.312 : 1 : 0.33
Unit Cell Volume:V 417.29 ų (Calculated from Unit Cell)
Twinning:All crystals are multiplied twinned
Crystal Atlas:
Image Loading
Click on an icon to view
Stringhamite - {101}, {011}, modified

About Crystal Atlas

The mindat.org Crystal Atlas allows you to view a selection of crystal drawings of real and idealised crystal forms for this mineral and, in certain cases, 3d rotating crystal objects. The 3d models and HTML5 code are kindly provided by www.smorf.nl.

Toggle
Edge Lines | Miller Indicies | Axes

Transparency
Opaque | Translucent | Transparent

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

Optical Data of Stringhamite

Type:Biaxial (+)
RI values: nα = 1.709 nβ = 1.717 nγ = 1.729
2V:Measured: 80° , Calculated: 80°
Maximum Birefringence:δ = 0.020

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:r > v weak
Pleochroism:Visible
Comments:alpha - light grey blue
beta - light blue
gamma - dark blue

Chemical Properties of Stringhamite

Formula:
CaCu(SiO
 
4
) · H
 
2
O
Simplified for copy/paste:CaCu(SiO4)·H2O
Essential elements:Ca, Cu, H, O, Si
All elements listed in formula:Ca, Cu, H, O, Si
Common Impurities:Al,Fe,Mg

Relationship of Stringhamite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.AE.05Beryllite
Be
 
3
(SiO
 
4
)(OH)
 
2
· H
 
2
O
9.AE.10Euclase
BeAl(SiO
 
4
)(OH)
9.AE.15Sverigeite
NaMnMgSnBe
 
2
(SiO
 
4
)
 
3
(OH)
9.AE.20Hodgkinsonite
Mn
2+
 
Zn
 
2
(SiO
 
4
)(OH)
 
2
9.AE.25Gerstmannite
MnMgZn(SiO
 
4
)(OH)
 
2
9.AE.30Clinohedrite
CaZn(SiO
 
4
) · H
 
2
O
9.AE.40Katoptrite
(Mn
2+
 
,Mg)
 
13
(Al,Fe
3+
 
)
 
4
Sb
5+
2
(SiO
 
4
)
 
2
O
 
20
9.AE.45Yeatmanite
Zn
 
6
Mn
2+
9
Sb
5+
2
(SiO
 
4
)
 
4
O
 
12
9.AE.50Sphaerobertrandite
Be
 
3
(SiO
 
4
)(OH)
 
2
Related Minerals - Hey's Index Grouping:

- +
14.2.1Dioptase
CuSiO
 
3
· H
 
2
O
14.2.2Shattuckite
Cu
 
5
(Si
 
2
O
 
6
)
 
2
(OH)
 
2
14.2.3Plancheite
Cu
 
8
(Si
 
8
O
 
22
)(OH)
 
4
· H
 
2
O
14.2.4Gilalite
Cu
 
5
Si
 
6
O
 
17
· 7H
 
2
O
14.2.5Chrysocolla
Cu
 
2-x
Al
 
x
(H
 
2-x
Si
 
2
O
 
5
)(OH)
 
4
· nH
 
2
O (x < 1)
14.2.6Litidionite
CuNaKSi
 
4
O
 
10
14.2.7Reinhardbraunsite
Ca
 
5
(SiO
 
4
)
 
2
(OH,F)
 
2
14.2.8Cuprorivaite
CaCu[Si
 
4
O
 
10
]
14.2.9Kinoite
Ca
 
2
Cu
 
2
(H
 
2
O)
 
2
[Si
 
3
O
 
10
]
14.2.11Apachite
Cu
 
9
Si
 
10
O
 
29
· 11H
 
2
O

Other Names for Stringhamite

Synonyms:
IMA1974-007
Other Languages:
German:Stringhamit
Russian:Стрингхамит
Spanish:Stringhamita

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 Stringhamite

Reference List:

- +
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 Stringhamite

Search Engines:
  • Look for Stringhamite on Google
  • Look for Stringhamite images on Google
  • External Links:
  • Look for Stringhamite on Webmineral
  • Look for Stringhamite on Athena Mineralogy
  • Look for Stringhamite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Stringhamite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • Top quality minerals from Kristalle of California
  • Fine minerals from bisbeeborn.com
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Fabre Minerals - search for Stringhamite specimens
  • Fine Minerals from Weinrich Minerals, Inc.
  • Fine and rare minerals from mintreasure.com
  • SpiriferMinerals.com - high quality low prices
  • Lapis Mineral Magazin
  • Buy RARE Minerals from Rocks of Africa
  • The Arkenstone - Fine Minerals
  • Buy from McDougall Minerals
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Localities for Stringhamite

    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.
    (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.
    Chile
     
    • Atacama Region
      • Copiapó Province
    Am.Min. 61:189
          • Punta del Cobre District
    Bob Jenkins & M. Dini collections
    Japan
     
    • Honshu Island
      • Chugoku Region
        • Okayama Prefecture
          • Takahashi City
            • Bitchu-cho-fuka (Bicchu-cho-fuka)
    Nishimura et al (2001) Koubutsu-Gakkai Kou'en-Youshi, 114.
    USA
     
    • Arizona
      • Gila Co.
        • Dripping Spring Mts
          • Banner District
            • Christmas area
              • 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 Mts
          • Pima District (Olive District; Mineral Hill District; Twin Buttes District)
            • Twin Buttes
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 268, 385.
    • California
      • 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; [email protected]
    • Utah
      • Beaver Co.
        • Rocky Range
          • Rocky District
    Am Min 61:3-4 pp 189-192
    Mineral and/or Locality  
    Search Google  
    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. 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 thousands 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: May 12, 2014 17:01:21
    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