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Frolovite

A valid IMA mineral species - grandfathered

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Photos of Frolovite (5)

Frolovite Gallery Search Photos of Frolovite

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Frolovite

Fuka mine, Fuka, Bitchū, Takahashi City, Okayama Prefecture, Japan

Frolovite

Fuka mine, Fuka, Bitchū, Takahashi City, Okayama Prefecture, Japan

Frolovite

Fuka mine, Fuka, Bitchū, Takahashi City, Okayama Prefecture, Japan

Frolovite

Fuka mine, Fuka, Bitchū, Takahashi City, Okayama Prefecture, Japan

Frolovite

Fuka mine, Fuka, Bitchū, Takahashi City, Okayama Prefecture, Japan

Frolovite

Fuka mine, Fuka, Bitchū, Takahashi City, Okayama Prefecture, Japan

Frolovite

Fuka mine, Fuka, Bitchū, Takahashi City, Okayama Prefecture, Japan

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About FroloviteHide

Formula:

Ca[B(OH)₄]₂

Colour:

White, with a grayish tint

Lustre:

Vitreous, Dull

Hardness:

3½

Specific Gravity:

2.14 - 2.22

Crystal System:

Triclinic

Name:

Named after its discovery locality.

Type Locality:

ⓘ Novofrolovskoye B-Cu deposit, Tur'insk, Turya river, Serovsky District, Sverdlovsk Oblast, Russia

This page provides mineralogical data about Frolovite.

Unique IdentifiersHide

Mindat ID:

1613

Long-form identifier:

mindat:1:1:1613:7

GUID
(UUID V4):

2e8b4f2b-e36a-457a-9179-f6ded03e4bbb

Classification of FroloviteHide

IMA status:

Approved, 'Grandfathered' (first described prior to 1959)

Type description reference:

Petrova E S (1957) A new hydrous calcium borate - frolovite. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 86, issue 5, 622-625

Strunz-mindat (2023):

6.AC.20

6 : BORATES
A : Monoborates
C : B(O,OH)₄, without and with additional anions; 1(T), 1(T)+OH, etc

Dana 8th ed.:

25.1.3.1

25 : ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
1 : Monoborates

Hey's CIM Ref.:

9.3.7

9 : Borates
3 : Borates of Ca and Sr

Mineral SymbolsHide

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

Lustre:

Vitreous, Dull

Transparency:

Opaque

Colour:

White, with a grayish tint

Hardness:

3½ on Mohs scale

Hardness:

VHN₂₅=151 - 181 kg/mm² - Vickers

Tenacity:

Brittle

Density:

2.14 - 2.22 g/cm³ (Measured) 2.259 g/cm³ (Calculated)

Optical Data of FroloviteHide

Type:

Biaxial (+)

RI values:

n_α = 1.563 n_β = 1.572 n_γ = 1.586

2V:

Measured: 70° , Calculated: 80°

Max Birefringence:

δ = 0.023

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Surface Relief:

Low

Dispersion:

strong

Chemical Properties of FroloviteHide

Formula:

Ca[B(OH)₄]₂

Elements listed:

B, Ca, H, O - search for minerals with similar chemistry

Crystallography of FroloviteHide

Crystal System:

Triclinic

Class (H-M):

1 - Pinacoidal

Space Group:

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 Å³ (Calculated from Unit Cell)

Morphology:

veinlets and dense aggregates of grains, to 0.15 mm.

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Year	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	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	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	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Frolovite'
loop_
_publ_author_name
'Egorov-Tismenko Y K'
'Gushchina A E'
'Shashkin D N'
'Simonov M A'
'Belov N V'
_journal_name_full 'Doklady Akademii Nauk SSSR'
_journal_volume 202 
_journal_year 1972
_journal_page_first 78
_journal_page_last 80
_publ_section_title
;
 The crystal structure of frolovite CaB2O4(H2O)4 = Ca(B(OH)4)2
;
_database_code_amcsd 0012451
_chemical_formula_sum 'Ca B2 (O8 H8)'
_cell_length_a 7.80
_cell_length_b 5.70
_cell_length_c 7.95
_cell_angle_alpha 108.5
_cell_angle_beta 101.5
_cell_angle_gamma 108.5
_cell_volume 299.656
_exptl_crystal_density_diffrn      2.192
_symmetry_space_group_name_H-M 'P -1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Ca   0.23800   0.01600   0.18900   0.00760
B1   0.02800   0.40700   0.23400   0.01064
B2   0.44800   0.32600   0.71200   0.00393
O-H1   0.06500   0.70300   0.29900   0.00899
O-H2   0.08500   0.29700   0.06700   0.00785
O-H3   0.14100   0.36700   0.38500   0.01026
O-H4   0.18600   0.78300   0.83200   0.01051
O-H5   0.24200   0.14300   0.68200   0.01153
O-H6   0.42600   0.73800   0.16200   0.01102
O-H7   0.47000   0.23100   0.52800   0.00646
O-H8   0.48800   0.61800   0.81000   0.00963

X-Ray Powder DiffractionHide

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

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Near-surface Processes
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)

Type Occurrence of FroloviteHide

Type Locality:

ⓘ Novofrolovskoye B-Cu deposit, Tur'insk, Turya river, Serovsky District, Sverdlovsk Oblast, Russia

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

Frolowite

Other Language Names for FroloviteHide

German:Frolovit
Frolowit

Russian:Фроловит

Spanish:Frolovita
Frolowita

Common AssociatesHide

Associated Minerals Based on Photo Data:

1 photo of Frolovite associated with Fedorovskite	Ca₂Mg₂B₄O₇(OH)₆
1 photo of Frolovite associated with Kurchatovite	Ca(Mg,Mn²⁺)[B₂O₅]
1 photo of Frolovite associated with Pentahydroborite	CaB₂O(OH)₆ · 2H₂O

Related Minerals - Strunz-mindat Grouping Hide

6.AC.05	Sinhalite	MgAl(BO₄)	Orth. mmm (2/m 2/m 2/m)
6.AC.10	Pseudosinhalite	Mg₂Al₃(BO₃)₂(OH)O₃	Mon. 2/m : P2₁/b
6.AC.15	Béhierite	(Ta⁵⁺,Nb⁵⁺)(BO₄)	Tet. 4/mmm (4/m 2/m 2/m) : I4₁/amd
6.AC.15	Schiavinatoite	(Nb,Ta)(BO₄)	Tet. 4/mmm (4/m 2/m 2/m) : I4₁/amd
6.AC.25	Hexahydroborite	Ca[B(OH)₄]₂ · 2H₂O or CaB₂O₄ · 6H₂O	Mon. 2/m : B2/b
6.AC.30	Henmilite	Ca₂Cu[B(OH)₄]₂(OH)₄	Tric. 1 : P1
6.AC.35	Bandylite	Cu[B(OH)₄]Cl	Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm
6.AC.40	Teepleite	Na₂[B(OH)₄]Cl	Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm
6.AC.45	Moydite-(Y)	Y[B(OH)₄](CO₃)	Orth. mmm (2/m 2/m 2/m) : Pbca
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. mmm (2/m 2/m 2/m) : Pnma
6.AC.60	Lüneburgite	Mg₃[B₂(OH)₆](PO₄)₂ · 6H₂O	Tric. 1 : P1
6.AC.65	Seamanite	Mn²⁺₃[B(OH)₄](PO₄)(OH)₂	Orth. mmm (2/m 2/m 2/m)
6.AC.70	Cahnite	Ca₂[B(OH)₄](AsO₄)	Tet. 4 : P4

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.

Internet Links for FroloviteHide

mindat.org URL:

https://www.mindat.org/min-1613.html
Please feel free to link to this page.

Search Engines:

Look for Frolovite on Google

Look for Frolovite images on Google

External Links:

Look for Frolovite on Webmineral

Look for Frolovite on Wikipedia

Look for Frolovite on Mineralien Atlas

Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for FroloviteHide

Reference List:

Petrova E S (1957) A new hydrous calcium borate - frolovite. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 86, issue 5, 622-625

Fleischer M (1958) New mineral names. American Mineralogist 43,385.

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

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. Soviet Physics - Doklady 21, 471-473

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

Grew, Ed S., Anovitz, L. M. - Eds. (1996) Boron - Mineralogy, Petrology and Geochemistry. Reviews in Mineralogy Vol. 33. Mineralogical Society of America

Localities for FroloviteHide

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 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.


Japan
Okayama Prefecture Takahashi City Bitchū Fuka ⓘ Fuka mine	Mineralogical Record: 27: 306. Mineralogical Journal Vol. 17 (1994) , No. 7 pp 330-337 I. Kusachi, Y. Takechi, C. Henmi and S. Kobayashi (1998) Parasibirskite, a New Mineral from Fuka, Okayama Prefecture, Japan. Mineralogical Magazine 62:521-525. Journal of Mineralogical and Petrological Sciences Vol. 99 (2004) , No. 2 April 67-71 Ando, T., Kanayama, A., Kobayashi, S., Miyawaki, R., Kishi, S., Tanabe, M., & Kusachi, I. (2015). Roweite from the Fuka mine, Okayama Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 110(1), 29-34.

Russia
Buryatia Yeravninsky District Ozernoe ore cluster ⓘ Solongo B deposit	[AmMin 85:1322] American Mineralogist, Volume 87, pages 1509–1513, 2002 *Pekov, Igor V. (1998) Minerals first discovered on the territory of the former Soviet Union. Ocean Pictures, Moscow. 369pp.*
Sverdlovsk Oblast Serovsky District Turya river Tur'insk ⓘ Novofrolovskoye B-Cu deposit (TL)	[Zap. Vses. Mineral. Obshch., 86, 622–625 (in Russian) AmMin 85:1322] Amer. Mineral. (1958) 43, 385–386 *Pekov, Igor V. (1998) Minerals first discovered on the territory of the former Soviet Union. Ocean Pictures, Moscow. 369pp.*

Frolovite

About FroloviteHide

Unique IdentifiersHide

Classification of FroloviteHide

Mineral SymbolsHide

Physical Properties of FroloviteHide

Optical Data of FroloviteHide

Chemical Properties of FroloviteHide

Crystallography of FroloviteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of FroloviteHide

Synonyms of FroloviteHide

Other Language Names for FroloviteHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for FroloviteHide

References for FroloviteHide

Localities for FroloviteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide