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Ramikite-(Y)

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Formula:
Li
 
4
(Na,Ca)
 
12
Y
 
6
Zr
 
6
(PO
 
4
)
 
12
(CO
 
3
)
 
4
O
 
4
[(OH),F]
 
4
System:TriclinicColour:Yellowish-white
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)

IMA status:Approved 2009
Dana 8th edition ID:43.4.15.

43 : COMPOUND PHOSPHATES, ETC.
4 : Anhydrous Compound Phosphates, etc·, Containing Hydroxyl or Halogen
mindat.org URL:http://www.mindat.org/min-39555.html
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Type Occurrence of Ramikite-(Y)

Type Locality:Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
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:
Synchysite-(Ce)SideriteSabinaiteRhodochrositePeatite-(Y)
Chabazite-NaAlbite

Physical Properties of Ramikite-(Y)

Lustre: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.
Fracture:Splintery
Density (calculated):3.60(1) g/cm3

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)°
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)
Li
 
4
Na
 
12
Y
 
12
(PO
 
4
)
 
12
(CO
 
3
)
 
4
(F,OH)
 
8
Epitaxi 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:
d-spacingIntensity
11.04 (76)
7.80 (79)
6.36 (75)
3.89 (100)
3.48 (68)
2.94 (98)
2.59 (98)
2.117 (65)

Chemical Properties of Ramikite-(Y)

Formula:
Li
 
4
(Na,Ca)
 
12
Y
 
6
Zr
 
6
(PO
 
4
)
 
12
(CO
 
3
)
 
4
O
 
4
[(OH),F]
 
4
Simplified for copy/paste:Li4(Na,Ca)12Y6Zr6(PO4)12(CO3)4O4[(OH),F]4
Essential elements:C, H, Li, Na, O, P, Y, Zr
All elements listed in formula:C, Ca, F, H, Li, Na, O, P, Y, Zr
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, 

Other Names for Ramikite-(Y)

Synonyms:
IMA2009-021
Other Languages:

Other Information

Fluorescence in UV light:None
Health Warning: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)

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  • Specimens:The following Ramikite-(Y) specimens are currently listed for sale on minfind.com.

    Localities for Ramikite-(Y)

    The 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. ? 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
     
    • Québec
      • Montérégie
        • La Vallée-du-Richelieu RCM
          • Mont Saint-Hilaire
    McDonald, A.M., Back, M.E., Gault, R.A., Horvath, 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.
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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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