Ramikite-(Y)
This page is currently not sponsored. Click here to sponsor this page.
Formula:
Li4(Na,Ca)12Y6Zr6(PO4)12(CO3)4O4[(OH),F]4
System:
Triclinic
Colour:
Yellowish-white
Lustre:
Vitreous, Dull
Hardness:
3
Name:
Named in honor of Mr. Robert A.J. Ramik (b. 1951), a thermoanalytical technician and mineralogist in the Department of Natural History at the Royal Ontario Museum, Toronto, Canada.
Earlier designated as UK 108.
Classification of Ramikite-(Y)
Approved
Approval Year:
2009
43.4.15.
43 : COMPOUND PHOSPHATES, ETC.
4 : Anhydrous Compound Phosphates, etc·, Containing Hydroxyl or Halogen
43 : COMPOUND PHOSPHATES, ETC.
4 : Anhydrous Compound Phosphates, etc·, Containing Hydroxyl or Halogen
Physical Properties of Ramikite-(Y)
Vitreous, Dull
Colour:
Yellowish-white
Streak:
White
Hardness (Mohs):
3
Hardness Data:
Estimated
Cleavage:
Poor/Indistinct
possible weak to poor {100}, {010}, and {001} cleavages.
possible weak to poor {100}, {010}, and {001} cleavages.
Fracture:
Splintery
Density:
3.60(1) g/cm3 (Calculated)
Chemical Properties of Ramikite-(Y)
Formula:
Li4(Na,Ca)12Y6Zr6(PO4)12(CO3)4O4[(OH),F]4
IMA Formula:
Li2Na6(Y,Ca,REE)3Zr3(PO4)6(CO3)2O2(OH,F)2
Elements listed in formula:
Analytical Data:
Average of 22 analyses. Empirical Formula: Li4(Na10.79Ca1.21)Σ12(Y4.34Ca0.99Dy0.18Er0.18Yb0.09La0.02Ce0.02Nd0.01)Σ5.83(Zr5.65Hf0.10Th0.06)Σ5.81 [(P0.98Al0.01)Σ0.99 O4]12 (CO3)4O4[(OH)3.03F0.97]Σ4.00
Li2O(2.01) (calc.) Na2O(11.25) (10.32–13.34) CaO(4.15) (4.01–4.27) Y2O3(16.48) (14.88–18.25) La2O3(0.11) (b.d.−0.48) Ce2O3(0.10) (b.d.−0.40) Nd2O3(0.08) (b.d.−031) Dy2O3(1.11) (0.96–1.23) Er2O3(1.18) (1.01–1.36) Yb2O3(0.57) (0.46–0.68) ZrO2(23.40) (22.66–24.70) ThO2(0.49) (b.d.−0.70) HfO2(0.69) (0.48–0.92) Al2O3(0.14) (0.09–0.22) P2O5(28.10) (27.47–28.58) F(0.62) (0.24–0.90) CO2(5.92) (calc.) H2O(0.92) (calc.) O = F −0.26 total 97.06,
Crystallography of Ramikite-(Y)
Crystal System:
Triclinic
Class (H-M):
1 - Pedial
Space Group:
P1
Cell Parameters:
a = 10.9977(6) Å, b = 10.9985(6) Å, c = 10.9966(6) Å
α = 90.075(4)°, β = 89.984(4)°, γ = 89.969(4)°
α = 90.075(4)°, β = 89.984(4)°, γ = 89.969(4)°
Ratio:
a:b:c = 1 : 1 : 1
Unit Cell Volume:
V 1,330.13 ų (Calculated from Unit Cell)
Morphology:
Common forms: pedion {100}, {001-}, {010}, {01-0}, {001}, and {001-}.
Epitaxial Relationships of Ramikite-(Y)
Epitaxial Minerals:
| Peatite-(Y) | Li4Na12Y12(PO4)12(CO3)4(F,OH)8 |
Epitaxy Comments:
As crystals (pseudocubes) with yellowish-white cores of ramikite-(Y) and thin (< 50 um) pale pink rims of peatite-(Y).
X-Ray Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 11.04 | (76) |
| 7.80 | (79) |
| 6.36 | (75) |
| 3.89 | (100) |
| 3.48 | (68) |
| 2.94 | (98) |
| 2.59 | (98) |
| 2.117 | (65) |
Type Occurrence of Ramikite-(Y)
General Appearance of Type Material:
Epitactic-like, euhedral crystals (pseudocubes) of peatite-(Y) and Ramikite-(Y) range from 0.1 to 1 mm in size (average: 0.2 mm). Core = Ramikite-(Y) and peatite-(Y) as thin (< 50 um) pale pink rims.
Geological Setting of Type Material:
Late-stage product in the core of the alkaline Poudrette Pegmatite
Associated Minerals at Type Locality:
Other Names for Ramikite-(Y)
Name in Other Languages:
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 Ramikite-(Y)
Reference List:
McDonald, A.M., Back, M.E., Gault, R.A., Horváth, L. (2013): Peatite-(Y) and ramikite-(Y), two new Na-Li-Y{+/-}Zr phosphate-carbonate minerals from the Poudrette pegmatite, Mont Saint-Hilaire, Québec. Canadian Mineralogist, 51, 569-596.
Internet Links for Ramikite-(Y)
mindat.org URL:
https://www.mindat.org/min-39555.html
Please feel free to link to this page.
Please feel free to link to this page.
External Links:
Mineral Dealers:
Localities for Ramikite-(Y)
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.
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.
Canada (TL) | |
| McDonald, A.M., Back, M.E., Gault, R.A., Horváth, L. (2013): Peatite-(Y) and ramikite-(Y), two new Na-Li-Y{+/-}Zr phosphate-carbonate minerals from the Poudrette pegmatite, Mont Saint-Hilaire, Québec. Canadian Mineralogist, 51, 569-596. |
Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada