Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Sborgite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
NaB5O6(OH)4 · 3H2O
System:
Monoclinic
Colour:
Colourless
Lustre:
Vitreous
Name:
Named after Umberto Sborgi (1883 - 1955), Professor of Chemistry, University of Milano, Italy.

Classification of Sborgite

Approved, 'Grandfathered' (first described prior to 1959)
6.EA.05

6 : BORATES
E : Pentaborates
A : Neso-pentaborates
26.5.1.1

26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
5 : Pentaborates
9.1.11

9 : Borates
1 : Borates of the alkalis and boric acid

Physical Properties of Sborgite

Vitreous
Diaphaneity (Transparency):
Transparent
Colour:
Colourless

Optical Data of Sborgite

Type:
Biaxial (+)
RI values:
nα = 1.431 nβ = 1.438 nγ = 1.507
2V:
Measured: 35° , Calculated: 38°
Max Birefringence:
δ = 0.076
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
none

Chemical Properties of Sborgite

IMA Formula:
NaB5O6(OH)4 · 3H2O
Elements listed in formula:

Crystallography of Sborgite

Crystal System:
Monoclinic
Cell Parameters:
a = 13.53Å, b = 16.45Å, c = 11.1Å
β = 113.16°
Ratio:
a:b:c = 0.822 : 1 : 0.675
Unit Cell Volume:
V 2,271.41 ų (Calculated from Unit Cell)

Type Occurrence of Sborgite

Relationship of Sborgite to other Species

Structurally related to group(s):
6.EA.05LeucostauritePb2B5O9Cl · 0.5H2O
6.EA.10SantiteKB5O6(OH)4 · 2H2O
6.EA.10Ramanite-(Rb)RbB5O6(OH)4 · 2H2O
6.EA.10Ramanite-(Cs)CsB5O6(OH)4 · 2H2O
6.EA.15Ammonioborite(NH4)3B15O20(OH)8 · 4H2O
6.EA.25UlexiteNaCaB5O6(OH)6 · 5H2O
9.1.1SassoliteB(OH)3
9.1.2MetaboriteHBO2
9.1.3DiomigniteLi2[B4O7]
9.1.4BiringucciteNa2B5O8(OH) · H2O
9.1.5NasiniteNa2B5O8(OH) · 2H2O
9.1.6KerniteNa2B4O6(OH)2 · 3H2O
9.1.7EzcurriteNa2B5O7(OH)3 · 2H2O
9.1.8TincalconiteNa2B4O5(OH)4 · 3H2O
9.1.9BoraxNa2B4O5(OH)4 · 8H2O
9.1.10AmeghiniteNaB3O3(OH)4
9.1.12AristarainiteNa2Mg[B6O8(OH)4]2 · 4H2O
9.1.13SantiteKB5O6(OH)4 · 2H2O
9.1.14LarderelliteNH4B5O7(OH)2 · H2O
9.1.15Ammonioborite(NH4)3B15O20(OH)8 · 4H2O
9.1.16RhodiziteKBe4Al4(B11Be)O28

Other Names for Sborgite

Name in Other Languages:
German:Sborgit
Spanish:Sborgita

Other Information

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 Sborgite

Reference List:
American Mineralogist (1958): 43: 378.

Acta Crystallographica (1972): B28: 3559-3567.

Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Internet Links for Sborgite

mindat.org URL:
https://www.mindat.org/min-3548.html
Please feel free to link to this page.

Localities for Sborgite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Italy (TL)
 
  • Tuscany
    • Pisa Province
      • Pomarance
American Mineralogist (1958): 43: 378.
USA
 
  • California
    • Inyo Co.
McAllister, James Franklin (1961), Sborgite in the Furnace Creek area, California: USGS PP 424-B, Article 129: 300-301
        • Ryan
J.W. Anthony, R.A. Bideaux, K.W. Bladh, M.C. Nichols: Handbook of Mineralogy, Vol. V (2003)
McAllister, James Franklin (1961), Sborgite in the Furnace Creek area, California: USGS PP 424-B, Article 129: B299-B301; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 259.
        • Twenty Mule Team Canyon
Am Min 64:3-4 pp 369-375; Erd, R.C., J.F. McAllister, and G.D. Eberlein (1979) New data on hungchaoite, the second world occurrence, Death Valley region, California. American Mineralogist: 64: 369-375.
McAllister, James Franklin (1961), Sborgite in the Furnace Creek area, California: USGS PP 424-B, Article 129: 300-301; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 259, 280.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2017, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: March 23, 2017 12:11:02 Page generated: March 15, 2017 00:34:24
Go to top of page