Burovaite-Ca
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About Burovaite-Ca
Formula:
(Na,K)4Ca2(Ti,Nb)8(Si4O12)4(OH,O)8 · 12H2O
Colour:
white
Lustre:
Vitreous
Specific Gravity:
2.73
Crystal System:
Monoclinic
Member of:
Name:
In honor of Tat’yana Alexandrovna Burova (1896–1975), a highly skilled chemist, who was among the first to examine many complex minerals of the Khibiny, Lovozero, and Vishnevye gory plutons, including the labuntsovite-group minerals.
This page provides mineralogical data about Burovaite-Ca.
Classification of Burovaite-Ca
Approved
Approval Year:
2008
9.CE.30c
9 : SILICATES (Germanates)
C : Cyclosilicates
E : [Si4O12]8- 4-membered single rings (vierer-Einfachringe), without insular complex anions
9 : SILICATES (Germanates)
C : Cyclosilicates
E : [Si4O12]8- 4-membered single rings (vierer-Einfachringe), without insular complex anions
60.1.8.3
60 : CYCLOSILICATES Four-Membered Rings
1 : Four-Membered Rings, as Titanosilicates
60 : CYCLOSILICATES Four-Membered Rings
1 : Four-Membered Rings, as Titanosilicates
Physical Properties of Burovaite-Ca
Optical Data of Burovaite-Ca
Type:
Biaxial (+)
RI values:
nα = 1.659 nβ = 1.669 nγ = 1.770
2V:
Measured: 19° to 30°
Max Birefringence:
δ = 0.111

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Chemical Properties of Burovaite-Ca
Formula:
(Na,K)4Ca2(Ti,Nb)8(Si4O12)4(OH,O)8 · 12H2O
IMA Formula:
(Na,K)4Ca2(Ti,Nb)8[Si4O12]4(OH,O)8 · 12H2O
Crystallography of Burovaite-Ca
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 14.529(3) Å, b = 14.203(3) Å, c = 7.899(1) Å
β = 117.37(1)°
β = 117.37(1)°
Ratio:
a:b:c = 1.023 : 1 : 0.556
Unit Cell V:
1,447.53 ų (Calculated from Unit Cell)
Twinning:
twinned
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
7.08 | (70) |
3.25 | (100) |
3.11 | (70) |
2.61 | (50) |
2.49 | (70) |
1.712 | (70) |
1.577 | (70) |
1.444 | (70) |
Type Occurrence of Burovaite-Ca
General Appearance of Type Material:
extended prismatic crystals 1–8 mm long. The crystals are pseudorhombic due to multiple twinning. prismatic crystals occur as radiaxial aggregates and parallel intergrowths with orange-red labuntsovite-Mn
Geological Setting of Type Material:
aegirine–feldspar pegmatite intense with low-temperature hydrothermal alteration of primary minerals in the vein resulted in the formation of various low-temperature phases.
Associated Minerals at Type Locality:
Synonyms of Burovaite-Ca
Relationship of Burovaite-Ca to other Species
Member of:
Other Members of this group:
Gjerdingenite-Ca | K2Ca(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O | Mon. 2/m : B2/m |
Gjerdingenite-Fe | K2Fe2+(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O | Mon. 2/m : B2/m |
Gjerdingenite-Mn | K2Mn2+(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O | Mon. 2/m : B2/m |
Gjerdingenite-Na | K2Na(Nb,Ti)4(Si4O12)2(OH,O)4 · 5H2O | Mon. 2/m : B2/m |
Karupmøllerite-Ca | (Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4 · 7H2O | |
Kuzmenkoite-Mn | K2Mn2+(Ti,Nb)4(Si4O12)2(OH,O)4 · 5-6H2O | Mon. |
Kuzmenkoite-Zn | K2Zn(Ti,Nb)4(Si4O12)2(OH,O)4·6-8H2O | Mon. m : Bm |
Lepkhenelmite-Zn | (Ba,K)2Zn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2O | Mon. m : Bm |
Common Associates
Associated Minerals Based on Photo Data:
Labuntsovite-Mn | 2 photos of Burovaite-Ca associated with Labuntsovite-Mn on mindat.org. |
Tsepinite-Na | 1 photo of Burovaite-Ca associated with Tsepinite-Na on mindat.org. |
Lemmleinite-Ba | 1 photo of Burovaite-Ca associated with Lemmleinite-Ba on mindat.org. |
Catapleiite | 1 photo of Burovaite-Ca associated with Catapleiite on mindat.org. |
Related Minerals - Nickel-Strunz Grouping
9.CE.05 | Papagoite | CaCu[H3AlSi2O9] | Mon. |
9.CE.10 | Verplanckite | Ba2(Mn,Fe,Ti)Si2O6(O,OH,Cl,F)2 · 3H2O or near | Hex. |
9.CE.15 | Baotite | Ba4Ti8Si4O28Cl | Tet. 4/m : I41/a |
9.CE.20 | Nagashimalite | Ba4(V,Ti)4B2Si8O27(O,OH)2Cl | Orth. mmm (2/m 2/m 2/m) : Pmmn |
9.CE.20 | Taramellite | Ba4(Fe3+,Ti,Fe2+,Mg)4(B2Si8O27)O2Clx | Orth. mmm (2/m 2/m 2/m) : Pmmn |
9.CE.20 | Titantaramellite | Ba4(Ti,Fe3+,Fe2+,Mg)4(B2Si8O27)O2Clx | Orth. |
9.CE.25 | Bario-orthojoaquinite | (Ba,Sr)4Fe2Ti2[Si4O12]2O2 · H2O | Orth. |
9.CE.25 | Byelorussite-(Ce) | NaBa2Ce2MnTi2[Si4O12]2O2(F,OH) · H2O | |
9.CE.25 | Joaquinite-(Ce) | NaBa2Ce2FeTi2[Si4O12]2O2(OH,F) · H2O | Mon. 2 : B2 |
9.CE.25 | Orthojoaquinite-(Ce) | NaBa2Ce2FeTi2[Si4O12]2O2(O,OH) · H2O | |
9.CE.25 | Strontiojoaquinite | Sr2Ba2(Na,Fe)2Ti2[Si4O12]2O2(O,OH)2 · H2O | Mon. |
9.CE.25 | Strontio-orthojoaquinite | (Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2O | Orth. |
9.CE.25 | Orthojoaquinite-(La) | NaBa2La2Fe2+Ti2[Si4O12]2O2(O,OH) · H2O | Orth. |
9.CE.30e | Labuntsovite-Mn | Na4K4(Ba,K)2Mn2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10-12H2O | Mon. |
9.CE.30a | Nenadkevichite | (Na,◻)8Nb4(Si4O12)2(O,OH)4 · 8H2O | Orth. mmm (2/m 2/m 2/m) : Pbam |
9.CE.30d | Lemmleinite-K | K2(Ti,Nb)2(Si4O12)(OH,O)2 · 4H2O | Orth. |
9.CE.30a | Korobitsynite | Na2(Ti,Nb)2(Si4O12)(OH,O)2 · 3-4H2O | Orth. mmm (2/m 2/m 2/m) : Pbam |
9.CE.30c | Kuzmenkoite-Mn | K2Mn2+(Ti,Nb)4(Si4O12)2(OH,O)4 · 5-6H2O | Mon. |
9.CE.30b | Vuoriyarvite-K | K2(Nb,Ti)2(Si4O12)(O,OH)2 · 4H2O | Mon. |
9.CE.30b | Tsepinite-Na | Na2(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O | Mon. |
9.CE.30c | Karupmøllerite-Ca | (Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4 · 7H2O | |
9.CE.30e | Labuntsovite-Mg | Na4K4(Ba,K)2Mg(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2O | Mon. |
9.CE.30e | Labuntsovite-Fe | Na4K4(Ba,K)2Fe2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2O | Mon. |
9.CE.30d | Lemmleinite-Ba | Na2K2Ba(Ti,Nb)4(Si4O12)2(O,OH)4 · 5H2O | Mon. 2/m : B2/m |
9.CE.30c | Gjerdingenite-Fe | K2Fe2+(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O | Mon. 2/m : B2/m |
9.CE.30h | Neskevaaraite-Fe | K3Na2Fe2+(Ti,Nb)4(Si4O12)2(O,OH)4 · 5-6 H2O | Mon. m : Bm |
9.CE.30b | Tsepinite-K | K2(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O | Mon. 2/m : B2/m |
9.CE.30b | Paratsepinite-Ba | Ba4(Ti,Nb)8(Si4O12)4(OH,O)8 · 8H2O | |
9.CE.30b | Tsepinite-Ca | Ca(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O | Mon. 2/m : B2/m |
9.CE.30h | Alsakharovite-Zn | NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2O | Mon. m : Bm |
9.CE.30c | Gjerdingenite-Mn | K2Mn2+(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O | Mon. 2/m : B2/m |
9.CE.30c | Lepkhenelmite-Zn | (Ba,K)2Zn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2O | Mon. m : Bm |
9.CE.30b | Tsepinite-Sr | Sr(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O | Mon. m : Bm |
9.CE.30b | Paratsepinite-Na | (Na,Sr,K,Ca)7(Ti,Nb)8(Si4O12)4(O,OH)8·nH2O n ~ 8 | Mon. 2/m : B2/m |
9.CE.30f | Paralabuntsovite-Mg | Na8K8Mg4Ti16(Si4O12)8(OH,O)16 · 20-24H2O | Mon. 2/m |
9.CE.30c | Gjerdingenite-Ca | K2Ca(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O | Mon. 2/m : B2/m |
9.CE.30c | Gjerdingenite-Na | K2Na(Nb,Ti)4(Si4O12)2(OH,O)4 · 5H2O | Mon. 2/m : B2/m |
9.CE.30h | Gutkovaite-Mn | K2CaMn(Ti,Nb)4(Si4O12)2(O,OH)4 · 5H2O | Mon. |
9.CE.30c | Kuzmenkoite-Zn | K2Zn(Ti,Nb)4(Si4O12)2(OH,O)4·6-8H2O | Mon. m : Bm |
9.CE.30g | Organovaite-Mn | K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4 · 5-7H2O | Mon. 2/m : B2/m |
9.CE.30g | Organovaite-Zn | K2Zn(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O | |
9.CE.30g | Parakuzmenkoite-Fe | (K,Ba)4Fe(Ti,Nb)8(Si4O12)4(O,OH)8 · 14H2O | Mon. 2/m : B2/m |
9.CE.45 | Komarovite | (Ca,Mn)Nb2[O3|Si2O7] · 3.5H2O | Orth. |
9.CE.45 | Natrokomarovite | (Na,Ca,H)2Nb2Si2O10(OH,F)2 · H2O | Orth. |
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 Burovaite-Ca
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Azarova Y V, Shlyukova Z V, Zolotarev A A, Organova N I (2009) Burovaite-Ca, (Na,K)4Ca2(Ti,Nb)8[Si4O12]4(OH,O)8·12H2O - the new labuntsovite group mineral and its position in the low-temperature mineral-forming processes within pegmatites of Khibiny Massif, Russia. Zapiski Rossiiskogo Mineralogicheskogo Obshchetstva 138, 40-52
Azarova Y V, Shlyukova Z V, Zolotarev A A, Organova N I (2009) Burovaite-Ca, (Na,K)4Ca2(Ti,Nb)8[Si4O12]4(OH,O)8·12H2O, a new labuntsovite-group mineral species and its place in low-temperature mineral formation in pegmatites of the Khibiny Pluton, Kola Peninsula, Russia. Geology of Ore Deposits 51, 774-783
Internet Links for Burovaite-Ca
mindat.org URL:
https://www.mindat.org/min-35892.html
Please feel free to link to this page.
Please feel free to link to this page.
External Links:
Mineral Dealers:
Localities for Burovaite-Ca
Locality List




All localities listed without proper references should be considered as questionable.
Russia (TL) | |
| Azarova Y V, Shlyukova Z V, Zolotarev A A, Organova N I (2009) Burovaite-Ca, (Na,K)4Ca2(Ti,Nb)8[Si4O12]4(OH,O)8·12H2O, a new labuntsovite-group mineral species and its place in low-temperature mineral formation in pegmatites of the Khibiny Pluton, Kola Peninsula, Russia. Geology of Ore Deposits 51, 774-783 |
Khibinpakhkchorr Mt., Khibiny Massif, Murmansk Oblast, Russia