Rhabdoborite-(Mo) (original) (raw)
A valid IMA mineral species
Formula:
Mg12Mo6+1.33O6(BO3)6F2
Specific Gravity:
3.42 (Calculated)
Name:
The rootname rhabdoborite reflects morphological (rhabdos is rod, in Greek) and chemical (borate) features of the mineral. The suffix/modifier indicates the predominant, species-defining M component.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:54356:5
992cb06d-383b-4c01-a2d3-4d7a57de8fa0
IMA Classification of Rhabdoborite-(Mo)Hide
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IMA Formula:
Mg12Mo6+1.33O6(BO3)6F2
Classification of Rhabdoborite-(Mo)Hide
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6.AB.
6 : BORATES
A : Monoborates
B : BO3, with additional anions; 1(D) + OH, etc.
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Rbo-Mo | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Rhabdoborite-(Mo)Hide
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Hardness Data:
Could not be measured
Fracture:
Irregular/Uneven
Comment:
Rod-like individuals, 30–40 μm thick, can easily split into very thin needles.
Density:
3.42 g/cm3 (Calculated)
Comment:
Density could not be measured due to intergrowths with anhydrite.
Optical Data of Rhabdoborite-(Mo)Hide
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RI values:
_n_ω = 1.703(4) _n_ε = 1.750(5)
δ = 0.047
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Comments:
E (light yellow) > O (colourless to very pale yellow).
Chemistry of Rhabdoborite-(Mo)Hide
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Mindat Formula:
Mg12Mo6+1.33O6(BO3)6F2
Crystallography of Rhabdoborite-(Mo)Hide
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Class (H-M):
6 - Pyramidal
Cell Parameters:
a = 10.6304(3) Å, c = 4.5637(2) Å
Unit Cell V:
446.63 ų (Calculated from Unit Cell)
Morphology:
Long-prismatic to acicular or rod-like crystals with hexagonal, polygonal or roundish cross section. More typically, combined in parallel or radial intergrowths, bunches, sheaf- or broom-like clusters up to 1 cm long. Sometimes as open-work or radial, bush-like aggregates up to 1 cm across.
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 9.20 Å | (100) |
| 5.312 Å | (32) |
| 3.483 Å | (73) |
| 2.769 Å | (70) |
| 2.549 Å | (40) |
| 2.228 Å | (72) |
| 1.702 Å | (61) |
| 1.475 Å | (37) |
Geological EnvironmentHide
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Type Occurrence of Rhabdoborite-(Mo)Hide
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General Appearance of Type Material:
Long-prismatic to acicular crystals up to 0.04 ×0.04×7 mm3 typically combined in aggregates up to 1 cm.
Place of Conservation of Type Material:
Collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 119071, Russia, registration number 5464/1.
Geological Setting of Type Material:
Fumarole, at a depth of 3-4 m below the surface, and at a temperature of 470–480 °C.
Associated Minerals at Type Locality:
Other Language Names for Rhabdoborite-(Mo)Hide
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Relationship of Rhabdoborite-(Mo) to other SpeciesHide
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Other Members of this group:
Related Minerals - Strunz-mindat GroupingHide
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| 6.AB. | Chubarovite | KZn2(BO3)Cl2 | Trig. 32 : _R_32 |
|---|---|---|---|
| 6.AB.05 | Hambergite | Be2(BO3)(OH) | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c a |
| 6.AB.10 | Berborite | Be2(BO3)(OH,F) · H2O | Trig. |
| 6.AB.15 | Jeremejevite | Al6(BO3)5(F,OH)3 | Hex. 6/m : _P_63/m |
| 6.AB.20 | Warwickite | (Mg,Ti,Fe,Al)2O(BO3) | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 6.AB.20 | Yuanfuliite | Mg(Fe3+,Al)O(BO3) | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 6.AB.25 | Karlite | (Mg,Al)6.5(BO3)3(OH)4(◻,Cl)0.5 | Orth. 222 : _P_21212 |
| 6.AB.30 | Azoproite | (Mg,Fe2+)2(Fe3+,Ti,Mg)(BO3)O2 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b a m |
| 6.AB.30 | Bonaccordite | Ni2Fe3+(BO3)O2 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b a m |
| 6.AB.30 | Fredrikssonite | Mg2(Mn3+,Fe3+)(BO3)O2 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b a m |
| 6.AB.30 | Ludwigite | Mg2Fe3+(BO3)O2 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b a m |
| 6.AB.30 | Vonsenite | Fe2+2Fe3+(BO3)O2 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b a m |
| 6.AB.30 | Marinaite | Cu2Fe3+O2(BO3) | Mon. 2/m : _P_21/b |
| 6.AB.30 | Savelievaite | Mg2Cr3+O2(BO3) | Orth. m m m _(_2/_m_2/_m_2/m ) : P b a m |
| 6.AB.35 | Pinakiolite | (Mg,Mn2+)2Mn3+(BO3)O2 | Mon. 2/m : _B_2/m |
| 6.AB.35 | Folvikite | Sb5+Mn3+(Mg,Mn2+)10O8(BO3)4 | Mon. 2 : _P_2 |
| 6.AB.40 | Blatterite | Sb5+3(Mn3+,Fe3+)9(Mn2+,Mg)35(BO3)16O32 | Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m |
| 6.AB.40 | Chestermanite | Mg2(Fe3+,Mn3+,Al,Sb3+)(BO3)O2 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 6.AB.40 | Orthopinakiolite | (Mg,Mn2+)2Mn3+(BO3)O2 | Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m |
| 6.AB.40 | Takéuchiite | (Mg,Mn2+)2(Mn3+,Fe3+)(BO3)O2 | Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m |
| 6.AB.45 | Hulsite | (Fe2+,Mg)2(Fe3+,Sn)(BO3)O2 | Mon. 2/m : _P_2/m |
| 6.AB.45 | Magnesiohulsite | (Mg,Fe2+)2(Fe3+,Sn,Mg)(BO3)O2 | Mon. 2/m : _P_2/m |
| 6.AB.45 | Aluminomagnesiohulsite | (Mg,Fe2+)2(Al,Mg,Sn)(BO3)O2 | Mon. 2/m : _P_2/m |
| 6.AB.50 | Fluoborite | Mg3(BO3)(F,OH)3 | Hex. 6/m : _P_63/m |
| 6.AB.50 | Hydroxylborite | Mg3(BO3)(OH)3 | Hex. 6/m : _P_63/m |
| 6.AB.55 | Shabynite | Mg5(BO3)(OH)5(Cl,OH)2 · 4H2O | Mon. |
| 6.AB.55 | Wightmanite | Mg5(BO3)O(OH)5 · 2H2O | Mon. 2/m |
| 6.AB.60 | Gaudefroyite | Ca4Mn3+2-3(BO3)3(CO3)(O,OH)3 | Hex. |
| 6.AB.65 | Sakhaite | Ca48Mg16(BO3)32(CO3)16 · 2(H2O,HCl) | Iso. m_3_m _(_4/_m_32/m ) : F d_3_m |
| 6.AB.70 | Harkerite | Ca48Mg16[AlSi4O15(OH)]4(BO3)16(CO3)16 · 2(H2O,HCl) | Trig. 3_m_ _(_32/m ) : R_3_m |
| 6.AB.75 | Pertsevite-(F) | Mg2(BO3)(F,OH) | Orth. m _m_2 : P n _a_21 |
| 6.AB.75 | Pertsevite-(OH) | Mg2(BO3)(OH) | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 6.AB.80 | Jacquesdietrichite | Cu2(H2BO3)(OH)3 | Orth. m m m _(_2/_m_2/_m_2/m ) : P m n a |
| 6.AB.85 | Painite | CaZrAl9(BO3)O15 | Hex. 6/m : _P_63/m |
| 6.AB.85 | Rhabdoborite-(V) | Mg12(V5+,Mo6+,W6+)1.5O6{[BO3]6-x[(P,As)O4]xF2-x} (x < 1) | Hex. 6 : _P_63 |
| 6.AB.85 | Rhabdoborite-(W) | Mg12(W6+,V5+)1.5O6{[BO3]6-x[(P,As)O4]xF2-x} | Hex. 6 : _P_63 |
| 6.AB.90 | Mengxianminite | (Ca,Na)2Sn2(Mg,Fe)3Al8[(BO3)(BeO4)O6]2 | Orth. m _m_2 : F d _d_2 |
Other InformationHide
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Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Rhabdoborite-(Mo)Hide
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References for Rhabdoborite-(Mo)Hide
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Reference List:
Pekov, Igor V., Zubkova, Natalia V., Koshlyakova, Natalia N., Belakovskiy, Dmitry I., Agakhanov, Atali A., Vigasina, Marina F., Britvin, Sergey N., Sidorov, Evgeny G., Pushcharovsky, Dmitry Yu. (2020) Rhabdoborite-(V), rhabdoborite-(Mo) and rhabdoborite-(W): a new group of borate minerals with the general formula Mg12M1 1/3[(BO3)6–x(PO4)xF2–x] (M = V5+, Mo6+ or W6+ and x < 1) Physics and Chemistry of Minerals, 47 (10) doi:10.1007/s00269-020-01105-7
Localities for Rhabdoborite-(Mo)Hide
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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
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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
| Russia (TL) | |
|---|---|
| Kamchatka Krai Milkovsky District Tolbachik Volcanic field Great Fissure eruption (Main Fracture) Northern Breakthrough (North Breach) Second scoria cone ⓘ Arsenatnaya fumarole (TL) | Pekov et al. (2020) +1 other reference |