Frolovite (original) (raw)
A valid IMA mineral species - grandfathered
About FroloviteHide
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Colour:
White, with a grayish tint
Specific Gravity:
2.14 - 2.22
Name:
Named after its discovery locality.
This page provides mineralogical data about Frolovite.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:1613:7
2e8b4f2b-e36a-457a-9179-f6ded03e4bbb
IMA Classification of FroloviteHide
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Approved, 'Grandfathered' (first described prior to 1959)
Type description reference:
Classification of FroloviteHide
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6.AC.20
6 : BORATES
A : Monoborates
C : B(O,OH)4, without and with additional anions; 1(T), 1(T)+OH, etc
25.1.3.1
25 : ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
1 : Monoborates
9.3.7
9 : Borates
3 : Borates of Ca and Sr
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 |
|---|---|---|
| Flv | 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 FroloviteHide
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Colour:
White, with a grayish tint
Hardness:
VHN25=151 - 181 kg/mm2 - Vickers
Density:
2.14 - 2.22 g/cm3 (Measured) 2.259 g/cm3 (Calculated)
Optical Data of FroloviteHide
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RI values:
_n_α = 1.563 _n_β = 1.572 _n_γ = 1.586
2V:
Measured: 70° , Calculated: 80°
δ = 0.023
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Chemistry of FroloviteHide
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Mindat Formula:
Ca[B(OH)4]2
Crystallography of FroloviteHide
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Class (H-M):
1 - Pinacoidal
Cell Parameters:
a = 7.774(2) Å, b = 5.680(1) Å, c = 8.136(2) Å
α = 113.51(1)°, β = 101.67(2)°, γ = 107.87(2)°
Ratio:
a:b:c = 1.369 : 1 : 1.432
Unit Cell V:
291.04 ų (Calculated from Unit Cell)
Morphology:
veinlets and dense aggregates of grains, to 0.15 mm.
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0012451 | Frolovite | Egorov-Tismenko Y K, Gushchina A E, Shashkin D N, Simonov M A, Belov N V (1972) The crystal structure of frolovite CaB2O4(H2O)4 = Ca(B(OH)4)2 Doklady Akademii Nauk SSSR 202 78-80 | 1972 | 0 | 293 | ||
| 0019821 | Frolovite | Simonov M A, Kazanskaya E V, Egorov-Tismenko Y K, Zhelezi E P, Belov N V (1976) Refinement of the crystal-structure of frolovite, Ca[B(OH)4]2 Doklady Akademii Nauk SSSR 230 91-94 | 1976 | 0 | 291 | ||
| 0019822 | Frolovite | Simonov M A, Kazanskaya E V, Egorov-Tismenko Y K, Zhelezi E P, Belov N V (1976) Refinement of the crystal-structure of frolovite, Ca[B(OH)4]2 Doklady Akademii Nauk SSSR 230 91-94 | 1976 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.08 Å | (10) |
| 3.858 Å | (9) |
| 3.471 Å | (8) |
| 2.357 Å | (8) |
| 2.522 Å | (7) |
| 2.330 Å | (7) |
| 2.65 Å | (6) |
Geological EnvironmentHide
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Type Occurrence of FroloviteHide
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Place of Conservation of Type Material:
Institute of Mining-Chemical Stock, Moscow, Russia, 1317a
Associated Minerals at Type Locality:
Reference:
Petrova E S (1957) A new hydrous calcium borate - frolovite. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 86, issue 5, 622-625
Synonyms of FroloviteHide
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Other Language Names for FroloviteHide
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Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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| 6.AC.05 | Sinhalite | MgAl(BO4) | Orth. m m m _(_2/_m_2/_m_2/m ) |
|---|---|---|---|
| 6.AC.10 | Pseudosinhalite | Mg2Al3(BO3)2(OH)O3 | Mon. 2/m : _P_21/b |
| 6.AC.15 | Béhierite | (Ta5+,Nb5+)(BO4) | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _I_41/a m d |
| 6.AC.15 | Schiavinatoite | (Nb,Ta)(BO4) | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _I_41/a m d |
| 6.AC.25 | Hexahydroborite | Ca[B(OH)4]2 · 2H2O or CaB2O4 · 6H2O | Mon. 2/m : _B_2/b |
| 6.AC.30 | Henmilite | Ca2Cu[B(OH)4]2(OH)4 | Tric. 1 : _P_1 |
| 6.AC.35 | Bandylite | Cu[B(OH)4]Cl | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_4/n m m |
| 6.AC.40 | Teepleite | Na2[B(OH)4]Cl | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_4/n m m |
| 6.AC.45 | Moydite-(Y) | Y[B(OH)4](CO3) | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c a |
| 6.AC.50 | Carboborite | Ca2Mg[B(OH)4]2(CO3)2 · 4H2O | Mon. 2/m |
| 6.AC.55 | Sulfoborite | Mg3[B(OH)4]2(SO4)(OH,F)2 | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 6.AC.60 | Lüneburgite | Mg3[B2(OH)6](PO4)2 · 6H2O | Tric. 1 : _P_1 |
| 6.AC.65 | Seamanite | Mn2+3[B(OH)4](PO4)(OH)2 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 6.AC.70 | Cahnite | Ca2[B(OH)4](AsO4) | Tet. 4 : _P_4 |
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 FroloviteHide
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References for FroloviteHide
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Localities for FroloviteHide
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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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