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Santite

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Formula:
K[B5O6(OH)4] · 2H2O
Colour:
Colourless
Lustre:
Vitreous
Crystal System:
Orthorhombic
Name:
Named after Georgi Santi (1746-1823), Director of the Museum of Natural History, Italy.
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Classification of SantiteHide

Approved
6.EA.10

6 : BORATES
E : Pentaborates
A : Neso-pentaborates
26.5.2.1

26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
5 : Pentaborates
9.1.13

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

Physical Properties of SantiteHide

Vitreous
Colour:
Colourless

Optical Data of SantiteHide

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

Formula:
K[B5O6(OH)4] · 2H2O
IMA Formula:
KB5O6(OH)4 · 2H2O

Crystallography of SantiteHide

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

Type Occurrence of SantiteHide

Synonyms of SantiteHide

Other Language Names for SantiteHide

German:Santit
Russian:Сантит
Spanish:Santita

Relationship of Santite to other SpeciesHide

Structurally related to group(s):

Common AssociatesHide

Associated Minerals Based on Photo Data:
Thénardite1 photo of Santite associated with Thénardite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

6.EA.05SborgiteNa[B5O6(OH)4] · 3H2OMon.
6.EA.05LeucostauritePb2[B5O9]Cl · 0.5H2OOrth. mm2 : Pnn2
6.EA.10Ramanite-(Rb)Rb[B5O6(OH)4] · 2H2OOrth. mm2 : Aba2
6.EA.10Ramanite-(Cs)Cs[B5O6(OH)4] · 2H2OMon. 2/m : B2/b
6.EA.15Ammonioborite(NH4)2[B5O6(OH)4]2 · H2OMon. 2/m : B2/b
6.EA.25UlexiteNaCa[B5O6(OH)6] · 5H2OTric. 1 : P1

Related Minerals - Dana Grouping (8th Ed.)Hide

26.5.2.2Ramanite-(Rb)Rb[B5O6(OH)4] · 2H2OOrth. mm2 : Aba2
26.5.2.3Ramanite-(Cs)Cs[B5O6(OH)4] · 2H2OMon. 2/m : B2/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

9.1.1SassoliteH3BO3Tric. 1 : P1
9.1.2MetaboriteHBO2Iso.
9.1.3DiomigniteLi2[B4O7]Tet.
9.1.4BiringucciteNa2B5O8(OH) · H2OMon.
9.1.5NasiniteNa2[B5O8(OH)] · 2H2OOrth.
9.1.6KerniteNa2[B4O6(OH)2] · 3H2OMon. 2/m : P2/b
9.1.7EzcurriteNa4B10O17 · 7H2OTric. 1 : P1
9.1.8TincalconiteNa2(B4O7) · 5H2OTrig. 3 2 : R3 2
9.1.9BoraxNa2(B4O5)(OH)4 · 8H2OMon. 2/m : B2/b
9.1.10AmeghiniteNa(H4B3O7)Mon.
9.1.11SborgiteNa[B5O6(OH)4] · 3H2OMon.
9.1.12AristarainiteNa2MgB12O20 · 8H2OMon. 2/m : P21/b
9.1.14Larderellite(NH4)B5O7(OH)2 · H2OMon.
9.1.15Ammonioborite(NH4)2[B5O6(OH)4]2 · H2OMon. 2/m : B2/b
9.1.16Rhodizite(K,Cs)Al4Be4(B,Be)12O28Iso. 4 3m : P4 3m

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 SantiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Merlino, S., and Sartori, F. (1970): Santite, a New Mineral Phase from Larderello, Tuscany. Contributions to Mineralogy and Petrology 27, 159-165.
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).

Internet Links for SantiteHide

Localities for SantiteHide

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.
Italy
 
  • Sicily
    • Messina Province
      • Eolie Islands (Aeolian Islands)
        • Lipari
          • Vulcano Island
Campostrini I. et al - Vulcano: ein aussergewohnlicher Fundpunkt von neuen und seltenen Mineralien - MineralienWelt 2010 - nr.3 - p.40-57
  • Tuscany
    • Pisa Province
      • Pomarance
Merlino, S., and Sartori, F. (1970): Santite, a New Mineral Phase from Larderello, Tuscany. Contributions to Mineralogy and Petrology 27, 159-165.
USA
 
  • California
    • Inyo Co.
      • Death Valley
Econ Geol (1996) 91:622-635
Mineral and/or Locality  
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