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Solongoite

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Formula:
Ca2(H3B3O7)(OH)Cl
System:
Monoclinic
Colour:
Colourless
Hardness:
Member of:
Name:
Named after its discovery locality

Classification of Solongoite

Approved 1973
6.CA.40

6 : BORATES
C : Triborates
A : Neso-triborates
25.3.2.1

25 : ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
3 : Triborates
10.1.11

10 : Borates with other anions
1 : Borates with halide
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http://www.mindat.org/min-3710.html
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First Recorded Occurrence of Solongoite

Year of Discovery:
1973

Physical Properties of Solongoite

Vitreous
Colour:
Colourless
Hardness (Mohs):

Crystallography of Solongoite

Crystal System:
Monoclinic
Cell Parameters:
a = 7.93Å, b = 7.26Å, c = 12.54Å
β = 94°
Ratio:
a:b:c = 1.092 : 1 : 1.727
Unit Cell Volume:
V 720.19 ų (Calculated from Unit Cell)

Optical Data of Solongoite

Type:
Biaxial (+)
RI values:
nα = 1.510 nβ = 1.510 nγ = 1.545
Max Birefringence:
δ = 0.035
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r > v strong

Chemical Properties of Solongoite

Formula:
Ca2(H3B3O7)(OH)Cl
Essential elements:
All elements listed in formula:

Relationship of Solongoite to other Species

Member of:
Other Members of Group:
InderboriteCaMg(H3B3O7)2 · 8H2O
InderiteMgB3O3(OH)5 · 5H2O
InyoiteCa(H4B3O7)(OH) · 4H2O
KurnakoviteMgB3O3(OH)5 · 5H2O
MeyerhofferiteCa2(H3B3O7)2 · 4H2O
6.CA.10AmeghiniteNa(H4B3O7)
6.CA.15InderiteMgB3O3(OH)5 · 5H2O
6.CA.20KurnakoviteMgB3O3(OH)5 · 5H2O
6.CA.25InderboriteCaMg(H3B3O7)2 · 8H2O
6.CA.30MeyerhofferiteCa2(H3B3O7)2 · 4H2O
6.CA.35InyoiteCa(H4B3O7)(OH) · 4H2O
6.CA.45Peprossiite-(Ce)(Ce,La)(Al3O)2/3B4O10
6.CA.50NifontoviteCa3B6O6(OH)12(H2O)2
6.CA.55OlshanskyiteCa3[B(OH)4]4(OH)2
10.1.1TeepleiteNa2[B(OH)4]Cl
10.1.2BandyliteCu[B(OH)4]Cl
10.1.3BerboriteBe2(BO3)(OH,F) · H2O
10.1.4FluoboriteMg3(BO3)(F,OH)3
10.1.5BoraciteMg3(B7O13)Cl
10.1.6KarliteMg7(BO3)3(OH,Cl)5
10.1.7ShabyniteMg5(BO3)(OH)5(Cl,OH)2 · 4H2O
10.1.8/9/10HilgarditeCa2B5O9Cl · H2O
10.1.12HydrochlorboriteCa4B8O15Cl2 · 21H2O
10.1.13EkateriniteCa2(B4O7)(Cl,OH)2 · 2H2O
10.1.14VolkovskiteKCa4[B5O8OH]4[B(OH)3]2Cl · 4H2O
10.1.15ChelkariteCaMgB2O4(Cl,OH)2 · 5H2O Or near, with Cl:OH = 3:1
10.1.16JohachidoliteCaAlB3O7
10.1.17SatimoliteKNa2Al4[Cl|B2O5]3 · 13H2O
10.1.18ChambersiteMn32+(B7O13)Cl
10.1.19Congolite(Fe2+,Mg)3(B7O13)Cl
10.1.20EricaiteFe32+(B7O13)Cl

Other Names for Solongoite

Name in Other Languages:
German:Solongoit
Simplified Chinese:斜氯硼钙石
Spanish:Solongoita
Traditional Chinese:斜氯硼鈣石

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 Solongoite

Reference List:
Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1974): 113: 117-121.

American Mineralogist (1975): 60: 162.

Soviet Physics – Doklady: 19: 326-327.

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

Internet Links for Solongoite

Localities for Solongoite

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.
Japan
 
  • Honshu Island
    • Chugoku Region
      • Okayama Prefecture
        • Takahashi City
          • Bicchu-cho (Bitchu-cho)
            • Fuka
(I. Pekov analyses)
Russia
 
  • Eastern-Siberian Region
    • Transbaikalia (Zabaykalye)
      • Buriatia Republic (Buryatia)
        • Vitim Plateau
American Mineralogist, Volume 87, pages 1509–1513, 2002; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Mineral and/or Locality  
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