Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (6 online) Mindat Auctions

Santite

Formula:
K[B
 
5
O
 
6
(OH)
 
4
] · 2H
 
2
O
System:OrthorhombicColour:Colourless
Name:Named after Georgi Santi (1746-1823), Director of the Museum of Natural History, Italy.


Sborgite Group.

Classification of Santite

IMA status:Approved
Strunz 8th edition ID:5/H.15-20
Nickel-Strunz 10th (pending) edition ID:6.EA.10

6 : BORATES
E : Pentaborates
A : Neso-pentaborates
Dana 8th edition ID:26.5.2.1

26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
5 : Pentaborates
Hey's CIM Ref.:9.1.13

9 : Borates
1 : Borates of the alkalis and boric acid
mindat.org URL:http://www.mindat.org/min-3527.html
Please feel free to link to this page.

Type Occurrence of Santite

Type Locality:Larderello, Pomarance, Pisa Province, Tuscany, Italy
Year of Discovery:1970

Physical Properties of Santite

Lustre:Vitreous
Colour:Colourless

Crystallography of Santite

Crystal System:Orthorhombic
Cell Parameters:a = 11.1Å, b = 11.18Å, c = 9.08Å
Ratio:a:b:c = 0.993 : 1 : 0.812
Unit Cell Volume:V 1,126.81 ų (Calculated from Unit Cell)

Optical Data of Santite

Type:Biaxial (+)
RI values: nα = 1.422 nβ = 1.435 nγ = 1.480
Maximum Birefringence:δ = 0.058

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

Chemical Properties of Santite

Formula:
K[B
 
5
O
 
6
(OH)
 
4
] · 2H
 
2
O
Essential elements:B, H, K, O
All elements listed in formula:B, H, K, O

Relationship of Santite to other Species

Related to:
  • Sborgite Group
    • Related Minerals - Nickel-Strunz Grouping):

    - +
    6.EA.05Sborgite
    Na[B
     
    5
    		O
     
    6
    		(OH)
     
    4
    		] · 3H
     
    2
    		O
    6.EA.05IMA2007-047
    Pb
     
    2
    		[B
     
    5
    		O
     
    9
    		]Cl·0.5H
     
    2
    		O
    6.EA.10Ramanite-(Rb)
    Rb[B
     
    5
    		O
     
    6
    		(OH)
     
    4
    		]·2H
     
    2
    		O
    6.EA.10Ramanite-(Cs)
    Cs[B
     
    5
    		O
     
    6
    		(OH)
     
    4
    		]·2H
     
    2
    		O
    6.EA.15Ammonioborite
    (NH
     
    4
    		)
     
    2
    		[B
     
    5
    		O
     
    6
    		(OH)
     
    4
    		]
     
    2
    		 · H
     
    2
    		O
    6.EA.25Ulexite
    NaCa[B
     
    5
    		O
     
    6
    		(OH)
     
    6
    		] · 5H
     
    2
    		O
    Related Minerals - Hey's Index Grouping:

    - +
    9.1.1Sassolite
    H
     
    3
    		BO
     
    3
    9.1.2Metaborite
    HBO
     
    2
    9.1.3Diomignite
    Li
     
    2
    		[B
     
    4
    		O
     
    7
    		]
    9.1.4Biringuccite
    Na
     
    2
    		B
     
    5
    		O
     
    8
    		(OH)·H
     
    2
    		O
    9.1.5Nasinite
    Na
     
    4
    		B
     
    10
    		O
     
    17
    		·5H
     
    2
    		O
    9.1.6Kernite
    Na
     
    2
    		[B
     
    4
    		O
     
    6
    		(OH)
     
    2
    		] · 3H
     
    2
    		O
    9.1.7Ezcurrite
    Na
     
    4
    		B
     
    10
    		O
     
    17
    		·7H
     
    2
    		O
    9.1.8Tincalconite
    Na
     
    2
    		[B
     
    4
    		O
     
    7
    		] · 5H
     
    2
    		O
    9.1.9Borax
    Na
     
    2
    		[B
     
    4
    		O
     
    7
    		] · 10H
     
    2
    		O
    9.1.10Ameghinite
    Na(H
     
    4
    		B
     
    3
    		O
     
    7
    		)
    9.1.11Sborgite
    Na[B
     
    5
    		O
     
    6
    		(OH)
     
    4
    		] · 3H
     
    2
    		O
    9.1.12Aristarainite
    Na
     
    2
    		MgB
     
    12
    		O
     
    20
    		·8H
     
    2
    		O
    9.1.14Larderellite
    (NH
     
    4
    		)B
     
    5
    		O
     
    6
    		(OH)
     
    4
    9.1.15Ammonioborite
    (NH
     
    4
    		)
     
    2
    		[B
     
    5
    		O
     
    6
    		(OH)
     
    4
    		]
     
    2
    		 · H
     
    2
    		O
    9.1.16Rhodizite
    (K,Cs)Al
     
    4
    		Be
     
    4
    		(B,Be)
     
    12
    		O
     
    28

    Other Names for Santite

    Synonyms:
    IMA1969-044
    Other Languages:
    German:Santit
    Russian:Сантит
    Spanish:Santita

    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 Santite

    Reference List:American Mineralogist (1971): 56: 636.

    Zeitschrift für Kristallographie: 98: 266-274.

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

    Articles/Blogs about Santite

    Internet Links for Santite

    Search Engines:
  • Look for Santite on Google
  • Look for Santite images on Google
    • External Links:
  • Look for Santite on Webmineral
  • Look for Santite on Athena Mineralogy
  • Look for Santite on Wikipedia
  • Look for Santite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Santite in the Natural History Museum (London) online catalogue
  • Santite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Rare and Unusual minerals at Mineralogical Research Company
  • Wendel Minerals - Auktion & Shop
  • Buy Minerals and Crystals from Crystalarium.com
  • Buy minerals from Mineralium.com
  • Buy fine minerals and gemstones from Pala International
  • Fine Minerals from Dan Weinrich Minerals
  • Search for Santite at Thames Valley Minerals
  • Search for Santite on minvision.com
  • Search for - Santite - on e-Rocks Mineral Sales & Auctions
  • Find Santite on www.crystalclassics.co.uk
  • Buy from David K Joyce minerals
  • Wright's Rock Shop - excellent mineral specimens since 1970
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

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

    Localities for Santite

    (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.
    Italy
     
    • Tuscany
      • Pisa Province
        • Pomarance
    		S. Merlino, F. Sartori: Can. Mineral. 27:159-165 (1970)
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon & Ida Ralph 1993-2008. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the 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 hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.