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Sanbornite

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Big Photo

Esquire No. 1 claim, Rush Creek, Rush Creek deposit, Big Creek-Rush Creek District, Fresno Co., California, USA
© Paul Bongaerts

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Formula:
Ba
 
2
(Si
 
4
O
 
10
)
System:OrthorhombicColour:Colourless to white
Hardness:5
Name:Named after Frank Sanborn, mineralogist, California Division of Mines, San Francisco, California, USA.
This page provides mineralogical data about Sanbornite.

Classification of Sanbornite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:8/H.02-50
Nickel-Strunz 10th (pending) edition ID:9.EF.10

9 : SILICATES (Germanates)
E : Phyllosilicates
F : Single nets with 6-membered rings, connected by M[4], M[8], etc.
Dana 8th edition ID:74.3.4.1

74 : PHYLLOSILICATES Modulated Layers
3 : Modulated Layers with joined strips
Hey's CIM Ref.:14.7.1

14 : Silicates not Containing Aluminum
7 : Silicates of Ba, Sr and Zn
mindat.org URL:http://www.mindat.org/min-3518.html
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Type Occurrence of Sanbornite

Type Locality:Incline Sanbornite deposit, Trumbull Peak, Incline, Mariposa Co., California, USA
Year of Discovery:1932

Physical Properties of Sanbornite

Lustre:Pearly
Diaphaneity (Transparency):Transparent, Translucent
Colour:Colourless to white
Hardness (Mohs):5

Crystallography of Sanbornite

Crystal System:Orthorhombic
Cell Parameters:a = 4.62Å, b = 7.68Å, c = 13.52Å
Ratio:a:b:c = 0.602 : 1 : 1.76
Unit Cell Volume:V 479.71 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Horizontal Axis: ° to ° Vertical Axis: % Source Data: Filtered Data:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Optical Data of Sanbornite

Type:Biaxial (-)
RI values: nα = 1.597 nβ = 1.616 nγ = 1.624
2V:Measured: 66° , Calculated: 64°
Maximum Birefringence:δ = 0.027

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r < v weak

Chemical Properties of Sanbornite

Formula:
Ba
 
2
(Si
 
4
O
 
10
)
Essential elements:Ba, O, Si
All elements listed in formula:Ba, O, Si
Common Impurities:Al,Fe,Mg,Ca,Sr,H2O

Relationship of Sanbornite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.EF.05Petalite
LiAl(Si
 
4
O
 
10
)
9.EF.15Searlesite
Na(H
 
2
BSi
 
2
O
 
7
)
9.EF.20Silinaite
NaLiSi
 
2
O
 
5
 · 2H
 
2
O
9.EF.25Kanemite
NaHSi
 
2
O
 
5
 · 2H
 
2
O
9.EF.30Yakovenchukite-(Y)
K
 
3
NaCaY
 
2
[Si
 
12
O
 
30
] · 4H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
14.7.2Krauskopfite
BaSi
 
2
O
 
5
 · 3H
 
2
O
14.7.3Walstromite
BaCa
 
2
(Si
 
3
O
 
9
)
14.7.4Macdonaldite
BaCa
 
4
Si
 
16
O
 
36
(OH)
 
2
 · 10H
 
2
O
14.7.5Ericssonite
BaMn
2+
2
Fe
3+
 
(Si
 
2
O
 
7
)O(OH)
14.7.6Ericssonite-2O
BaMn
2+
2
Fe
3+
 
(Si
 
2
O
 
7
)O(OH)
14.7.7Gillespite
BaFe
2+
 
[Si
 
4
O
 
10
]
14.7.8Andrémeyerite
BaFe
2+
2
(Si
 
2
O
 
7
)
14.7.9Pellyite
Ba
 
2
Ca(Fe,Mg)
 
2
Si
 
6
O
 
17
14.7.10Taikanite
Sr
 
3
BaMn
2+
2
(Si
 
4
O
 
12
)O
 
2
14.7.11Willemite
Zn
 
2
SiO
 
4
14.7.12Hemimorphite
Zn
 
4
Si
 
2
O
 
7
(OH)
 
2
 · H
 
2
O
14.7.13Zincsilite
Zn
 
3
(Si
 
4
O
 
10
)(OH)
 
2
 · 4H
 
2
O
14.7.14Hardystonite
Ca
 
2
Zn(Si
 
2
O
 
7
)
14.7.15Petedunnite
Ca(Zn,Mn
2+
 
,Mg,Fe
2+
 
)Si
 
2
O
 
6
14.7.16Clinohedrite
CaZn(SiO
 
4
) · H
 
2
O
14.7.17Junitoite
CaZn
 
2
Si
 
2
O
 
7
 · H
 
2
O
14.7.18Larsenite
PbZnSiO
 
4
14.7.19Esperite
PbCa
 
2
Zn
 
3
(SiO
 
4
)
 
3
14.7.20Hodgkinsonite
Mn
2+
 
Zn
 
2
(SiO
 
4
)(OH)
 
2
14.7.21Gerstmannite
MnMgZn(SiO
 
4
)(OH)
 
2
14.7.22Gageite
Mn
 
21
O
 
3
(Si
 
4
O
 
12
)
 
2
(OH)
 
20
14.7.23Franklinfurnaceite
Ca
 
2
Fe
3+
 
Mn
2+
3
Mn
3+
 
(Zn
 
2
Si
 
2
O
 
10
)(OH)
 
8

Other Names for Sanbornite

Other Languages:
German:Sanbornit
Russian:Санборнит
Simplified Chinese:硅钡石
Spanish:Sanbornita

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 Sanbornite

Reference List:

- +
Rogers, A.F. (1932) Sanbornite, a new barium silicate mineral from Mariposa County, California. American Mineralogist: 17: 161-172.

Bradley, W.W. (1932), Sanbornite, a newly described mineral from California, CA Min. Bur. Rept. 28: 82-83.

Douglass, R.M. (1954), Crystal structure of sanbornite (abstract): Geological Society of America Bull.: 65: 1246.

Douglass, R.M. (1958), The crystal structure of sanbornite, BaSi2O5: American Mineralogist: 43: 517-536.

Hesse, K.-F. (1980) Crystal chemistry of silica-rich barium silicates. III: refinement of the crystal structures of the layer silicates Ba2[Si4O10] (I), (sanbornite), and Ba2[Si4O10] (h). Zeitschrift für Kristallographie (1980): 153: 33-41.

Internet Links for Sanbornite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Sanbornite details from Handbook of Mineralogy (PDF)
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    • Localities for Sanbornite

    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.
    Hide Locality List
    (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.
    Canada
     
    • Nunavut Territory
      • Baffin Island
        • Kimmirut (Lake Harbour)
    		http://www.gia.edu/gemsandgemology/18578/22211/2278/back_issue_article_detail.cfm
    • Yukon Territory
      • Watson Lake Mining District
        • Itsy Mts
          • MacMillian Pass
    		CanMin:11:444; Alfors, J.T. & Pabst, A. (1984): Titanian taramellites in western North America, American Mineralogist, 69, 358-373.
    Mexico
     
    • Baja California (Baja California Norte; BC Norte)
      • Mun. de Ensenada
    No reference listed
      • Tres Pozos
    		Can.Min.22:653-658; American Mineralogist, Volume 69, pages 358-373, 1984
    Republic of Macedonia
     
    • Veles
    		V. Bermanec et al. : "Zn-rich magnetoplumbite from Nezilovo, Macedonia", Eur. Journ. Mineral., 1993, 5, pp 957-960
    USA
     
    • California
      • Fresno Co.
        • Big Creek-Rush Creek District
          • Rush Creek deposit
    		Anonymous (1963), Core drilling at Rush Creek completed: California Division Mines, Mineral Information Service: 16(1): 11; Stinson, Melvin Clarence & J.T. Alfors (1964), New minerals from Fresno County – I: California Division Mines & Geology Mineral Information Service.: 17: 235-238; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 359, 381.
    [MinRec 33:161]; American Mineralogist (1981), Volume 66, pages 1050-1053
    Bob Walstrom, p.c.
            • Rush Creek
    		Mineralogical Record (2002): 33: 163.
    Marek Patus
      • Mariposa Co.
        • Incline
          • Trumbull Peak
    		Rogers, Austin Flint (1932), Sanbornite, a new barium silicate mineral from Maricopa County, California: American Mineralogist: 17: 171; Matthews, Robert Alfred & John T. Alfors (1962), Sanbornite from Rush Creek, Fresno County: California Division Mines & Geology Mineral Information Service: 15(6): 1-3; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 359, 385; Dunning, G.E. and Cooper, J.F. (1999), "Barium silicate minerals from Trumbull Peak, Mariposa County, California." Mineralogical Record: 30(6): 411-417; American Mineralogist (1981): 66: 1050-1053; Canadian Mineralogist: 22: 653-658.
      • Tulare Co.
        • Exeter area
          • Chickencoop Canyon
    		Pabst, Adolf (1978) Zur morphologie des taramellits. Tschermaks Mineralogische und Petrographische Mitteilungen: 25: 248; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 464, 466; American Mineralogist (1984): 69: 358-373.; Mineralogical Record: 34(2): 159-166
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    Copyright © Jolyon Ralph and Ida Chau 1993-2013. 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.
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