Borate mineral

Short description: Mineral which contains a borate anion group

Large (up to 1.8 cm) yellow londonite crystals associated with rubellite tourmaline. Londonite is an unusual caesium-rich heptaborate.[1]

The Borate Minerals are minerals which contain a borate anion group. The borate (BO3) units may be polymerised similar to the SiO4 unit of the silicate mineral class. This results in B2O5, B3O6, B2O4 anions as well as more complex structures which include hydroxide or halogen anions.[2] The [B(O,OH)4]− anion exists as well.

Many borate minerals, such as borax, colemanite, and ulexite, are salts: soft, readily soluble, and found in evaporite contexts. However, some, such as boracite, are hard and resistant to weathering, more similar to the silicates.

There are over 100 different borate minerals.[2][3] Borate minerals include:

* Kernite Na2B4O6(OH)2·3H2O
* Borax Na2B4O5(OH)4·8H2O
* Ulexite NaCaB5O6(OH)6·5H2O
* Colemanite CaB3O4(OH)3·H2O
* Boracite Mg3B7O13Cl
* Painite CaZrAl9O15(BO3)

## Contents

* 1 Nickel–Strunz Classification -06- Borates
* 1.1 Class: borates
* 1.1.1 Subclass: nesoborates
* 1.1.2 Subclass: inoborates
* 1.1.3 Subclass: phylloborates
* 1.1.4 Subclass: tektoborates
* 2 See also
* 3 References
* 4 External links

## Nickel–Strunz Classification -06- Borates

IMA-CNMNC proposes a new hierarchical scheme (Mills et al., 2009). This list uses it to modify the Classification of Nickel–Strunz (mindat.org, 10 ed, pending publication). Note that although Nickel–Strunz division letters were traditionally based on the number of boron atoms in a mineral's chemical formula (06.A are monoborates, 06.B are diborates, etc.), the IMA has reclassified borate minerals based on the polymerisation of the borate anion.

Abbreviations

* REE: rare-earth element (Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu)
* PGE: platinum-group element (Ru, Rh, Pd, Os, Ir, Pt)
* * : discredited (IMA/CNMNC status)
* ? : questionable/doubtful (IMA/CNMNC status)

Regarding 03.C Aluminofluorides, 06 Borates, 08 Vanadates (04.H V[5,6] Vanadates), 09 Silicates:

* neso-: insular (from Greek νῆσος Script error: The function "transl" does not exist., "island")
* soro-: grouped (from Greek σωρός Script error: The function "transl" does not exist., "heap, pile, mound")
* cyclo-: rings of (from Greek κύκλος Script error: The function "transl" does not exist., "circle")
* ino-: chained (from Greek ίνα Script error: The function "transl" does not exist., "fibre", [from Ancient Greek ἴς])
* phyllo-: sheets of (from Greek φῠ́λλον Script error: The function "transl" does not exist., "leaf")
* tekto-: three-dimensional framework (from Greek τεκτονικός Script error: The function "transl" does not exist., "of building")

Nickel–Strunz code scheme: NN.XY.##x

* NN: Nickel–Strunz mineral class number
* X: Nickel–Strunz mineral division letter
* Y: Nickel–Strunz mineral family letter
* ##x: Nickel–Strunz mineral/group number; x an add-on letter

### Class: borates

* 06\. Alfredstelznerite
* 06.A Monoborates
* 06.AA BO3, without additional anions; 1(D): 05 Sassolite; 15 Nordenskioldine, 15 Tusionite; 35 Jimboite, 35 Kotoite; 40 Takedaite
* 06.AB BO3, with additional anions; 1(D) + OH, etc.: 05 Hambergite, 10 Berborite, 15 Jeremejevite; 20 Warwickite, 20 Yuanfuliite; 25 Karlite; 30 Azoproite, 30 Bonaccordite, 30 Fredrikssonite, 30 Ludwigite, 30 Vonsenite; 35 Pinakiolite; 40 Blatterite, 40 Orthopinakiolite, 40 Takeuchiite, 40 Chestermanite; 45 Hulsite, 45 Magnesiohulsite, 45 Aluminomagnesiohulsite; 50 Hydroxylborite, 50 Fluoborite; 55 Shabynite, 55 Wightmanite; 60 Gaudefroyite, 65 Sakhaite, 70 Harkerite; 75 IMA2008-060, 75 Pertsevite; 80 Jacquesdietrichite, 85 Painite
* 06.AC B(O,OH)4, without and with additional anions; 1(T), 1(T)+OH, etc.: 05 Sinhalite; 10 Pseudosinhalite; 15 Béhierite, 15 Schiavinatoite; 20 Frolovite; 25 Hexahydroborite; 30 Henmilite; 35 Bandylite; 40 Teepleite; 45 Moydite-(Y); 50 Carboborite; 55 Sulfoborite; 60 Luneburgite; 65 Seamanite; 70 Cahnite
* 06.H Unclassified Borates
* 06.HA Unclassified borates: 05 Chelkarite; 10 Braitschite-(Ce); 15 Satimolite; 20 Iquiqueite; 25 Wardsmithite; 30 Korzhinskite; 35 Halurgite; 40 Ekaterinite; 45 Vitimite; 50 Canavesite; 55 Qilianshanite

#### Subclass: nesoborates

* 06.BA Neso-diborates with double triangles B2(O,OH)5; 2(2D); 2(2D) + OH, etc.: 05 Suanite; 10 Clinokurchatovite, 10 Kurchatovite; 15 Sussexite, 15 Szaibelyite; 20 Wiserite
* 06.BB Neso-diborates with double tetrahedra B2O(OH)6; 2(2T): 05 Pinnoite; 10 Pentahydroborite
* 06.CA Neso-triborates: 10 Ameghinite; 15 Inderite; 20 Kurnakovite; 25 Inderborite; 30 Meyerhofferite; 35 Inyoite; 40 Solongoite; 45 Peprossiite-(Ce); 50 Nifontovite; 55 Olshanskyite
* 06.DA Neso-tetraborates: 10 Borax; 15 Tincalconite; 20 Hungchaoite; 25 Fedorovskite, 25 Roweite; 30 Hydrochlorborite; 35 Uralborite; 40 Numanoite, 40 Borcarite; 60 Fontarnauite
* 06.EA Neso-pentaborates: 05 Sborgite; 10 Ramanite-(Rb), 10 Ramanite-(Cs), 10 Santite; 15 Ammonioborite; 25 Ulexite
* 06.FA Neso-hexaborates: 05 Aksaite; 10 Mcallisterite; 15 Admontite; 20 Rivadavite; 25 Teruggite

#### Subclass: inoborates

Main category: Chemistry:Inoborates

* 06.BC Ino-diborates with triangles and/or tetrahedra: 10 Calciborite, 10 Aldzhanite*; 15 Vimsite; 20 Sibirskite, 20 Parasibirskite
* 06.CB Ino-triborates: 10 Colemanite; 15 Hydroboracite; 20 Howlite; 25 Jarandolite
* 06.DB Ino-tetraborates: 05 Kernite
* 06.EB Ino-pentaborates: 05 Larderellite; 10 Ezcurrite; 15 Probertite; 20 Tertschite; 25 Priceite
* 06.FB Ino-hexaborates: 05 Aristarainite; 10 Kaliborite

#### Subclass: phylloborates

Main category: Chemistry:Phylloborates

* 06.CC Phyllo-triborates: 05 Johachidolite
* 06.EC Phyllo-pentaborates: 05 Biringuccite, 05 Nasinite; 10 Gowerite; 15 Veatchite, 15 Veatchite-A, 15 Veatchite-p; 20 Volkovskite; 25 Tuzlaite; 30 Heidornite; 35 Brianroulstonite
* 06.FC Phyllo-hexaborates: 05 Nobleite, 05 Tunellite, 05 Balavinskite; 10 Strontioborite; 15 Ginorite, 15 Strontioginorite; 20 Fabianite
* 06.GB Phyllo-nonaborates, etc.: 05 Studenitsite; 10 Penobsquisite; 15 Preobrazhenskite; 20 Walkerite

#### Subclass: tektoborates

* 06.BD Tektodiborates with tetrahedra: 05 Santarosaite
* 06.DD Tekto-tetraborates: 05 Diomignite
* 06.ED Tekto-pentaborates: 05 IMA2007-047, 05 Tyretskite, 05 Hilgardite, 05 Kurgantaite
* 06.GA Tekto-heptaborates: 05 Boracite, 05 Chambersite, 05 Ericaite; 10 Congolite, 10 Trembathite
* 06.GC Tekto-dodecaborates: 05 Rhodizite, 05 Londonite
* 06.GD Mega-tektoborates: 05 Ruitenbergite, 05 Pringleite; 10 Metaborite

## See also

* Classification of minerals - Non-silicates
* Classification of minerals - Silicates

## References

1. ↑ Londonite at Mindat.org
2. ↑ 2.0 2.1 Klein, Cornelis and Cornelius Hurlbut, Jr., Manual of Mineralogy, Wiley, 20th ed., 1985 pp. 343 - 347 ISBN:0-471-80580-7
3. ↑ Webmineral.Com, Strunz group V/G - V/L

* Stuart J. Mills; Frédéric Hatert; Ernest H. Nickel; Giovanni Ferraris (2009). "The standardisation of mineral group hierarchies: application to recent nomenclature proposals". Eur. J. Mineral. 21: 1073–1080. doi:10.1127/0935-1221/2009/0021-1994. http://pubsites.uws.edu.au/ima-cnmnc/Mills et al 2009 Groups EJM October.pdf. Retrieved 2011-01-24.
* Ferraiolo, Jim. "Nickel–Strunz (Version 10) Classification System". webmineral.com. http://webmineral.com/strunz/strunz.php.
* Hr. Dr. Udo Neumann der Uni-Tuebingen (Systematik der Minerale)

## External links

* v
* t
* e

white;">IMA–CNMNC / Nickel–Strunz IDs
Mineral categories (classes, subclasses, divisions)

"Special cases"
("native elements and organic minerals")|

* "Native elements" (IDs 1)
* Organic minerals (IDs 10)

"Sulfides and oxides"|

* Sulfides (IDs 2.A–F)
* Sulfosalts; sulfarsenites, sulfantimonites, sulfbismuthites (IDs 2.G)

* Sulfosalts; sulfarsenates, sulfantimonates (IDs 2.K)
* Other sulfosalts (IDs 2.H–J and 2.L–M)

* Oxides (IDs 4.A–E, e.g. pyrochlore supergroup and corundum group)

* Hydroxides (IDs 4.F–G)
* "Arsenites", "sulfites" and iodates (IDs 4.J–K)

* Tellurium oxysalts
* Vanadium oxides (IDs 4.H)

"Evaporites and similars"|

* Carbonates (IDs 5.A–E)
* Nitrates (IDs 5.N)
* Borates (IDs 6)
* Halides (IDs 3)

"Mineral structures with tetrahedral units"
(sulfate anion, phosphate anion,
silicon, etc.)|

* Monomeric minerals (similar to nesosilicates)

* Sulfates (IDs 7.A–E)
* Thiosulphates (IDs 7.J)

* Chromates (IDs 7.F)
* Molybdates, wolframates, niobates (IDs 7.G–H)

* Phosphates (IDs 8)
* Arsenates, vanadates (IDs 8)

* Monomeric, isolated silicates (IDs 9.A)
* Germanates (IDs 9.J)

* Silicate frameworks, tectosilicates

* Zeolite frameworks, zeolite family (IDs 9.G)

* Other zeolitic frameworks: nephelines (IDs 9.FA.05)
* Cancrinite-sodalite groups (IDs 9.FB.)

* Other tectosilicates (IDs 9.FA. and 9.FB.15, e.g. feldspars)

* Other silicate frameworks

* Cyclosilicates (IDs 9.C)
* Phyllosilicates (IDs 9.E, e.g. clays)
* Silica family (IDs 4.DA.)

* Inosilicates

* Single chain inosilicates (IDs 9.D, e.g. pyroxenes)

* Ribbon or multiple chain inosilicates (IDs 9.D, e.g. amphiboles)

* Other non monomeric minerals

* Unclassified silicates (IDs 9.H)

* Sorosilicates (IDs 9.B, e.g. epidote and seidozerite supergroups)

* Polymeric, isolated silicates (IDs 9.A, e.g. olivine and gadolinite supergroups)

* Other inorganic polymers (e.g. polyoxometalates; "polyphosphates", IDs 8.F)

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