Rimkorolgite
A valid IMA mineral species
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About Rimkorolgite
Olga M. Rimskaya-Korsakov
Formula:
(Mg,Mn)5(Ba,Sr,Ca)(PO4)4 · 8H2O
Colour:
Yellow-brown, light pink, flesh-red to reddish brown
Lustre:
Vitreous, Silky
Hardness:
3
Specific Gravity:
2.67
Crystal System:
Orthorhombic
Name:
Named in honor of Mikhailovna Rimskaya-Korsakov, Olga (Oльга Михайловна Римская-Корсаков) (29 April 1914, St. Petersburg - 18 October 1987), a Russian mineralogist from St. Petersburg University. She was an expert on the Kovdor area, doing 25 years of field work there.
Dimorph of:
Structurally related to bakhchisaraitsevite and liversidgeite.
15-20% of the grains bear intergrowths with hexagonal polymorph, UM1995-23-PO:BaHMgSr.
15-20% of the grains bear intergrowths with hexagonal polymorph, UM1995-23-PO:BaHMgSr.
Unique Identifiers
Mindat ID:
3420
Long-form identifier:
mindat:1:1:3420:9
GUID
(UUID V4):
(UUID V4):
a5088d71-e63f-4978-9b3b-2c9b3e7ac812
IMA Classification of Rimkorolgite
Approved
IMA Formula:
BaMg5(PO4)4 · 8H2O
First published:
1995
Classification of Rimkorolgite
8.CH.45
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
H : With large and medium-sized cations, RO4:H2O < 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
H : With large and medium-sized cations, RO4:H2O < 1:1
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Rolg | 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 Rimkorolgite
Vitreous, Silky
Transparency:
Transparent, Translucent
Comment:
silky in aggregates.
Colour:
Yellow-brown, light pink, flesh-red to reddish brown
Streak:
White
Hardness:
3 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
Perfect {001}
Perfect {001}
Density:
2.67(2) g/cm3 (Measured) 2.62 g/cm3 (Calculated)
Optical Data of Rimkorolgite
Type:
Biaxial (+)
RI values:
nα = 1.552(2) nβ = 1.552(2) nγ = 1.558(2)
2V:
Measured: 23° (5)
Max Birefringence:
δ = 0.006
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:
Low
Dispersion:
weak to distinct
Chemistry of Rimkorolgite
Mindat Formula:
(Mg,Mn)5(Ba,Sr,Ca)(PO4)4 · 8H2O
Crystallography of Rimkorolgite
Crystal System:
Orthorhombic
Cell Parameters:
a = 12.829(4) Å, b = 8.335(2) Å, c = 18.312(3) Å
Ratio:
a:b:c = 1.539 : 1 : 2.197
Unit Cell V:
1,958.10 ų (Calculated from Unit Cell)
Z:
4
Morphology:
short prismatic, fibrous, and in crusts.
Comment:
Point Group: 2/m 2/m 2/m or mm2.; Space Group: P cmm, P cm21, or P c2m.
Crystal Structure
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Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0006928 | Rimkorolgite | Krivovichev S V, Britvin S N, Burns P C, Yakovenchuk V N (2002) Crystal structure of rimkorolgite, Ba[Mg5(H2O)7(PO4)4](H2O), and its comparison with bakhchisaraitsevite European Journal of Mineralogy 14 397-402 | 2002 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 10.51 Å | (100) |
| 3.081 Å | (78) |
| 2.969 Å | (44) |
| 3.054 Å | (41) |
| 3.520 Å | (34) |
| 2.839 Å | (34) |
| 3.874 Å | (32) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 36 : Carbonatites, kimberlites, and related igneous rocks | |
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] |
Type Occurrence of Rimkorolgite
Place of Conservation of Type Material:
Mineralogical Museum of the St. Petersburg Mining Institute.
Mineralogical Museum of the Mineralogical Chair of St. Petersburg University, Russia.
Mineralogical Museum of the Mineralogical Chair of St. Petersburg University, Russia.
Associated Minerals at Type Locality:
Reference:
Britvin, S.N., Pakhomovsky, Y.A., Bogdanova, A.N., Khomjakov, A.P., Krashova, N.I. (1995) Rimkorolgite (Mg,Mn)5(Ba,Sr,Ca) (PO4)4·8H2O — the new mineral from Kovdor iron deposit (Kola Peninsula). Zapiski Vserossijskogo Mineralogicheskogo Obshchestva: 124(1): 90-95.
Synonyms of Rimkorolgite
Other Language Names for Rimkorolgite
German:Rimkorolgit
Russian:Римкорольгит
Simplified Chinese:磷钡镁石
Spanish:Rimkorolgita
Traditional Chinese:磷鋇鎂石
Common Associates
Associated Minerals Based on Photo Data:
| 1 photo of Rimkorolgite associated with Calcite | CaCO3 |
| 1 photo of Rimkorolgite associated with Bobierrite | Mg3(PO4)2 · 8H2O |
Related Minerals - Strunz-mindat Grouping
| 8.CH.05 | Walentaite | Fe3+3(P0.84As0.16O4)2(O,OH)6As3+2.56Ca0.42Na0.28Mn2+0.35Fe2+0.30O6.1(OH)0.9(H2O)0.9 |
| 8.CH.05 | Natrowalentaite | [Fe3+0.5Na0.5(H2O)6][NaAs3+2(Fe3+2.33W6+0.67)(PO4)2O7] |
| 8.CH.05 | Halilsarpite | [Mg(H2O)6][CaAs3+2(Fe3+2.67Mo6+0.33)(AsO4)2O7] |
| 8.CH.10 | Anapaite | Ca2Fe2+(PO4)2 · 4H2O |
| 8.CH.15 | Picropharmacolite | Ca4Mg(AsO4)2(HAsO4)2 · 11H2O |
| 8.CH.20 | Dittmarite | (NH4)Mg(PO4) · H2O |
| 8.CH.20 | Niahite | (NH4)(Mn2+,Mg)(PO4) · H2O |
| 8.CH.25 | Francoanellite | K3Al5(PO3OH)6(PO4)2 · 12H2O |
| 8.CH.25 | Taranakite | (K,NH4)Al3(PO4)3(OH) · 9H2O |
| 8.CH.30 | Schertelite | (NH4)2MgH2(PO4)2 · 4H2O |
| 8.CH.35 | Hannayite | (NH4)2Mg3H4(PO4)4 · 8H2O |
| 8.CH.40 | Struvite | (NH4)Mg(PO4) · 6H2O |
| 8.CH.40 | Struvite-(K) | KMg(PO4) · 6H2O |
| 8.CH.40 | Hazenite | KNaMg2(PO4)2 · 14H2O |
| 8.CH.50 | Bakhchisaraitsevite | Na2Mg5(PO4)4 · 7H2O |
| 8.CH.55 | Fahleite | CaZn5Fe3+2(AsO4)6 · 14H2O |
| 8.CH.55 | Smolyaninovite | Co3Fe3+2(AsO4)4 · 11H2O |
| 8.CH.60 | Barahonaite-(Al) | (Ca,Cu,Na,Fe3+,Al)12Al2(AsO4)8(OH,Cl)x · nH2O |
| 8.CH.60 | Barahonaite-(Fe) | (Ca,Cu,Na,Fe3+,Al)12Fe3+2(AsO4)8(OH,Cl)x · nH2O |
| 8.CH.70 | Epifanovite | NaCaCu5(PO4)4[AsO2(OH)2] · 7H2O |
| 8.CH.75 | Esdanaite-(Ce) | NaMnCe(PO4)2 · 4H2O |
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.
Internet Links for Rimkorolgite
mindat.org URL:
https://www.mindat.org/min-3420.html
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References for Rimkorolgite
Reference List:
Britvin, S. N., Pakhomovsky, Y. A., Bogdanova, A. N., Khomjakov, A. P., Krashova, N. I. (1995) Rimkorolgite (Mg,Mn)5(Ba,Sr,Ca) (PO4)4·8H2O — the new mineral from Kovdor iron deposit (Kola Peninsula) Zapiski Vserossijskogo Mineralogicheskogo Obshchestva, 124 (1) 90-95
Localities for Rimkorolgite
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Russia | |
| Ivanyuk +1 other reference |
| The Mineralogical Record 27: 305. +4 other references |
| Mikhailova et al. (2016) |
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Kovdor Zheleznyi Mine, Kovdor Massif, Murmansk Oblast, Russia