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Peatite-(Y)

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About Peatite-(Y)Hide

Formula:
Li4Na12Y12(PO4)12(CO3)4(F,OH)8
Colour:
Pale pink
Lustre:
Vitreous
Hardness:
3
Specific Gravity:
3.62 (Calculated)
Crystal System:
Orthorhombic
Name:
Named in honor of Mrs. Cynthia Peat (1925–1999), a former X-ray technician in the Department of Mineralogy at the Royal
Ontario Museum, Canada.
Previously designated UK 107.


Classification of Peatite-(Y)Hide

Approved
Approval Year:
2009
43.4.14.

43 : COMPOUND PHOSPHATES, ETC.
4 : Anhydrous Compound Phosphates, etc·, Containing Hydroxyl or Halogen

Physical Properties of Peatite-(Y)Hide

Vitreous
Colour:
Pale pink
Streak:
White
Hardness:
Comment:
approximately
Tenacity:
Brittle
Cleavage:
Very Good
on {100}, {010}, and {001}
Density:
3.62(1) g/cm3 (Calculated)

Chemical Properties of Peatite-(Y)Hide

Formula:
Li4Na12Y12(PO4)12(CO3)4(F,OH)8
IMA Formula:
Li4Na12(Y,Na,Ca,REE)12(PO4)12(CO3)4(F,OH)8

Crystallography of Peatite-(Y)Hide

Crystal System:
Orthorhombic
Class (H-M):
2 2 2 - Disphenoidal
Space Group:
P2 2 2
Setting:
P2 2 2
Cell Parameters:
a = 11.167(2) Å, b = 11.164(2) Å, c = 11.162(1) Å
Ratio:
a:b:c = 1 : 1 : 1
Unit Cell V:
1,391.55 ų (Calculated from Unit Cell)
Morphology:
pinacoid {100}, {010}, and {001} and the minor forms rhombic prism {110}, {101}, and {011}

Epitaxial Relationships of Peatite-(Y)Hide

Epitaxial Minerals:
Ramikite-(Y)Li4(Na,Ca)12Y6Zr6(PO4)12(CO3)4O4[(OH),F]4
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 DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.56 (57)
3.95 (57)
3.54 (46)
3.23 (37)
3.23 (83)
2.71 (38)
2.63 (100)
2.149 (42)

Type Occurrence of Peatite-(Y)Hide

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 Poudrette Pegmatite
Associated Minerals at Type Locality:

Synonyms of Peatite-(Y)Hide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Ramikite-(Y)14 photos of Peatite-(Y) associated with Ramikite-(Y) on mindat.org.
Siderite1 photo of Peatite-(Y) associated with Siderite on mindat.org.
Sabinaite1 photo of Peatite-(Y) associated with Sabinaite on mindat.org.
Chabazite-Na1 photo of Peatite-(Y) associated with Chabazite-Na on mindat.org.
Gobbinsite1 photo of Peatite-(Y) associated with Gobbinsite on mindat.org.

Fluorescence of Peatite-(Y)Hide

Shows no discernible fluorescence under long-, medium-, or short-wave ultraviolet radiation.

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 Peatite-(Y)Hide

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 Peatite-(Y)Hide

Localities for Peatite-(Y)Hide

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.

Locality ListHide

- 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). 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.
Canada (TL)
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
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.
Mineral and/or Locality  
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