Ramikite-(Y)
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About Ramikite-(Y)
Formula:
Li4(Na,Ca)12Y6Zr6(PO4)12(CO3)4O4[(OH),F]4
Colour:
Yellowish-white
Lustre:
Vitreous, Dull
Hardness:
3
Specific Gravity:
3.60 (Calculated)
Crystal System:
Triclinic
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:
3 on Mohs scale
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:
Li4(Na,Ca)12(Y,Ca,REE)6Zr6(PO4)12(CO3)4O4[(OH),F]4
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 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
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:
Synonyms of Ramikite-(Y)
Common Associates
Associated Minerals Based on Photo Data:
| Peatite-(Y) | 14 photos of Ramikite-(Y) associated with Peatite-(Y) on mindat.org. |
| Siderite | 1 photo of Ramikite-(Y) associated with Siderite on mindat.org. |
| Sabinaite | 1 photo of Ramikite-(Y) associated with Sabinaite on mindat.org. |
| Chabazite-Na | 1 photo of Ramikite-(Y) associated with Chabazite-Na on mindat.org. |
| Gobbinsite | 1 photo of Ramikite-(Y) associated with Gobbinsite on mindat.org. |
Fluorescence of Ramikite-(Y)
None
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:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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)
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - 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).
All localities listed without proper references should be considered as questionable.
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