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BaMg5(PO4)4 · 8H2O
Yellow-brown to dirty ...
Named after Ol'ga Mikhailovna Rimskaya -Korstakova, Professor of Mineralogy.
Structurally related to bakhchisaraitsevite and liversidgeite.

Classification of Rimkorolgite


C : Phosphates without additional anions, with H2O
H : With large and medium-sized cations, RO4:H2O < 1:1

Physical Properties of Rimkorolgite

Yellow-brown to dirty pink
Hardness (Mohs):

Optical Data of Rimkorolgite

Biaxial (+)
RI values:
nα = 1.552 nβ = 1.552 nγ = 1.558
Measured: 23°
Max Birefringence:
δ = 0.006
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
weak to distinct

Chemical Properties of Rimkorolgite

IMA Formula:
BaMg5(PO4)4 · 8H2O
Elements listed in formula:

Crystallography of Rimkorolgite

Crystal System:
Cell Parameters:
a = 12.83 Å, b = 8.33 Å, c = 18.31 Å
a:b:c = 1.54 : 1 : 2.198
Unit Cell Volume:
V 1,956.86 ų (Calculated from Unit Cell)

Type Occurrence of Rimkorolgite

Relationship of Rimkorolgite to other Species

8.CH.05WalentaiteH2Ca2Fe63+(AsO4)5(PO4)3 · 14H2O
8.CH.10AnapaiteCa2Fe2+(PO4)2 · 4H2O
8.CH.15PicropharmacoliteCa4Mg(AsO3OH)2(AsO4)2 · 11H2O
8.CH.20Dittmarite(NH4)MgPO4 · H2O
8.CH.20Niahite(NH4)Mn2+PO4 · H2O
8.CH.25FrancoanelliteK3Al5(PO3OH)6(PO4)2 · 12H2O
8.CH.25TaranakiteK3Al5(PO3OH)6(PO4)2 · 18H2O
8.CH.30Schertelite(NH4)2Mg(PO3OH)2 · 4H2O
8.CH.35Hannayite(NH4)2Mg3(PO3OH)4 · 8H2O
8.CH.40Struvite(NH4)MgPO4 · 6H2O
8.CH.40Struvite-(K)KMgPO4 · 6H2O
8.CH.40HazeniteKNaMg2(PO4)2 · 14H2O
8.CH.50BakhchisaraitseviteNa2Mg5(PO4)4 · 7H2O
8.CH.55FahleiteCaZn5Fe23+(AsO4)6 · 14H2O
8.CH.55SmolyaninoviteCo3Fe23+(AsO4)4 · 11H2O
8.CH.60Barahonaite-(Al)(Ca,Cu,Na,Fe3+,Al)12Al2(AsO4)8(OH,Cl)x · nH2O
8.CH.60Barahonaite-(Fe)(Ca,Cu,Na,Fe3+,Al)12Fe23+(AsO4)8(OH,Cl)x · nH2O

Other Names for Rimkorolgite

Name in Other Languages:
Simplified Chinese:磷钡镁石
Traditional Chinese:磷鋇鎂石

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 Rimkorolgite

Reference List:
Zapiski Vsesoyuznyi Mineralogicheskoe Obshchestva: 124(1): 90-95.

Mineralogical Record: 27: 305.

European Journal of Mineralogy (2002): 14: 397-402.

Internet Links for Rimkorolgite URL:
Please feel free to link to this page.

Localities for Rimkorolgite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
Subbotin, R. P. L. V. V., & Pakhomovsky, Y. A. (1998). A new type of scandium mineralization in phoscorites and carbonatites of the Kovdor massif, Russia. Canadian Mineralogist 36:971-980.
[MinRec 27:305]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Yakovenchuk V N, Ivanyuk G Y, Mikhailova Y A, Selivanova E A, Krivovichev S V (2006) Pakhomovskyite, Co3(PO4)2·8H2O, a new mineral species from Kovdor, Kola Peninsula, Russia, The Canadian Mineralogist 44, 117-123
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