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Bakhchisaraitsevite

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About BakhchisaraitseviteHide

Formula:
Na2Mg5(PO4)4 · 7H2O
Colour:
Light yellow, colourless or greenish
Lustre:
Vitreous
Hardness:
2 - 2½
Crystal System:
Monoclinic
Name:
For Alexander Yu. Bakhchisaraitsev (1947-1998)
Structurally related to rimkorolgite and liversidgeite.


Classification of BakhchisaraitseviteHide

Approved
8.CH.50

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

Pronounciation of BakhchisaraitseviteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of BakhchisaraitseviteHide

Vitreous
Colour:
Light yellow, colourless or greenish
Streak:
White
Hardness:
2 - 2½ on Mohs scale

Optical Data of BakhchisaraitseviteHide

Type:
Biaxial (+)
RI values:
nα = 1.538 nβ = 1.540 nγ = 1.543
Max Birefringence:
δ = 0.005
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
none

Chemical Properties of BakhchisaraitseviteHide

Formula:
Na2Mg5(PO4)4 · 7H2O

Crystallography of BakhchisaraitseviteHide

Crystal System:
Monoclinic

Type Occurrence of BakhchisaraitseviteHide

Synonyms of BakhchisaraitseviteHide

Other Language Names for BakhchisaraitseviteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Dolomite4 photos of Bakhchisaraitsevite associated with Dolomite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.CH.05WalentaiteH(Ca,Mn2+,Fe2+)Fe3+3(AsO4,PO4)4 · 7H2OOrth.
8.CH.10AnapaiteCa2Fe2+(PO4)2 · 4H2OTric. 1 : P1
8.CH.15PicropharmacoliteCa4Mg(AsO4)2(HAsO4)2 · 11H2OTric. 1 : P1
8.CH.20Dittmarite(NH4)Mg(PO4) · H2OOrth.
8.CH.20Niahite(NH4)(Mn2+,Mg)(PO4) · H2OOrth. mm2 : Pmn21
8.CH.25FrancoanelliteK3Al5(PO4)2(HPO4)3 · 12H2OTrig.
8.CH.25Taranakite(K,NH4)Al3(PO4)3(OH) · 9H2OTrig. 3m (3 2/m) : R3c
8.CH.30Schertelite(NH4)2MgH2(PO4)2 · 4H2OOrth.
8.CH.35Hannayite(NH4)2Mg3H4(PO4)4 · 8H2OTric. 1 : P1
8.CH.40Struvite(NH4)Mg(PO4) · 6H2OOrth. mm2
8.CH.40Struvite-(K)KMg(PO4)·6H2OOrth. mm2 : Pmn21
8.CH.40HazeniteKNaMg2(PO4)2 · 14H2OOrth. mm2
8.CH.45Rimkorolgite(Mg,Mn)5(Ba,Sr,Ca)(PO4)4 · 8H2OOrth.
8.CH.55FahleiteCaZn5Fe3+2(AsO4)6 · 14H2OOrth.
8.CH.55SmolyaninoviteCo3Fe3+2(AsO4)4 · 11H2OOrth.
8.CH.60Barahonaite-(Al)(Ca,Cu,Na,Fe3+,Al)12Al2(AsO4)8(OH,Cl)x · nH2OMon. 2/m : P2/b
8.CH.60Barahonaite-(Fe)(Ca,Cu,Na,Fe3+,Al)12Fe3+2(AsO4)8(OH,Cl)x · nH2OMon. 2/m : P2/b

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.

References for BakhchisaraitseviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Neues Jahrbuch für Mineralogie, Monatshefte (2000): 402-418.
Canadian Mineralogist: 38: 831-838.

Internet Links for BakhchisaraitseviteHide

Localities for BakhchisaraitseviteHide

ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Chile
 
  • Antofagasta Region
    • Antofagasta Province
      • Mejillones
Joy Desor material. EDS verified. Jason Smith collection
XRD by Joachim Lorenz SEM-EDS by Joy Desor
Russia
 
  • Murmanskaya Oblast'
New Data on Minerals (2004): 39: 50-64
[MinRec 32:413]; http://maurice.strahlen.org/kola/kovdor.htm; 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
Mikhailova, J. A., Kalashnikov, A. O., Sokharev, V. A., Pakhomovsky, Y. A., Konopleva, N. G., Yakovenchuk, V. N., ... & Ivanyuk, G. Y. (2016). 3D mineralogical mapping of the Kovdor phoscorite–carbonatite complex (Russia). Mineralium Deposita, 51(1), 131-149.
  • Urals Region
    • Southern Urals
      • Chelyabinsk Oblast'
        • Chelyabinsk coal basin
          • Korkino
Mineral and/or Locality  
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