Pink lanthanite-(Nd) from Whitianga quarry, Coromandel Peninsula, New Zealand

Ian T. Graham; Ross E. Pogson; David M. Colchester; Janet Hergt; Rod Martin; Peter A. Williams

Pink lanthanite-(Nd) from Whitianga quarry, Coromandel Peninsula, New Zealand

Ian T. Graham, Ross E. Pogson, David M. Colchester, Janet Hergt, Rod Martin, Peter A. Williams

Research output: Contribution to journal › Article

9 Citations (Scopus)

Abstract

Lanthanite-(Nd) occurs in tuffaceous, altered andesitic agglomerate in the Whitianga quarry, Coromandel Peninsula, New Zealand. The usual platy habit is represented, together with more unusual blocky equant crystals. The former show the new forms {201}, {102} and {111}, and the latter, {111}. ICPÃ¢â‚¬â€œMS analyses show that the distribution of REE (and Ga) is consistent with the formulation (Nd0.63La0.59Ce0.35Pr0.15Sm0.10Gd0.069Y0.06Eu0.03Dy0.02Ga0.01) 2.04(CO3)3ÃƒÆ’Ã‚â€šÃƒâ€šÃ‚Â·8H2O; the REE sum of 2.04 is due solely to rounding errors. The find represents the first occurrence of this rare mineral in New Zealand. The mineral formed under comparatively oxidizing conditions. The REE are probably scavenged by warm waters circulating through underlying greywackes of the Manaia Hill Group. We also characterized the lanthanite-(Nd) by X-ray diffraction (powder method) and Raman spectroscopy.

Original language	English
Number of pages	8
Journal	Canadian mineralogist
Publication status	Published - 2007

Keywords

Coromandel Peninsula (N.Z.)
X-ray diffraction
composition
raman spectroscopy
rare-earth metals

Cite this

@article{d1198b78374b45d9b4c7ffe2d6e1926c,

title = "Pink lanthanite-(Nd) from Whitianga quarry, Coromandel Peninsula, New Zealand",

abstract = "Lanthanite-(Nd) occurs in tuffaceous, altered andesitic agglomerate in the Whitianga quarry, Coromandel Peninsula, New Zealand. The usual platy habit is represented, together with more unusual blocky equant crystals. The former show the new forms {201}, {102} and {111}, and the latter, {111}. ICP{\~A}¢{\^a}‚¬{\^a}€{\oe}MS analyses show that the distribution of REE (and Ga) is consistent with the formulation (Nd0.63La0.59Ce0.35Pr0.15Sm0.10Gd0.069Y0.06Eu0.03Dy0.02Ga0.01) 2.04(CO3)3{\~A}ƒ{\AE}{\textquoteright}{\~A}‚{\^a}€{\v s}{\~A}ƒ{\^a}€{\v s}{\~A}‚{\^A}·8H2O; the REE sum of 2.04 is due solely to rounding errors. The find represents the first occurrence of this rare mineral in New Zealand. The mineral formed under comparatively oxidizing conditions. The REE are probably scavenged by warm waters circulating through underlying greywackes of the Manaia Hill Group. We also characterized the lanthanite-(Nd) by X-ray diffraction (powder method) and Raman spectroscopy.",

keywords = "Coromandel Peninsula (N.Z.), X-ray diffraction, composition, raman spectroscopy, rare-earth metals",

author = "Graham, {Ian T.} and Pogson, {Ross E.} and Colchester, {David M.} and Janet Hergt and Rod Martin and Williams, {Peter A.}",

year = "2007",

language = "English",

journal = "Canadian mineralogist",

issn = "0008-4476",

publisher = "Mineralogical Association of Canada",

}

TY - JOUR

T1 - Pink lanthanite-(Nd) from Whitianga quarry, Coromandel Peninsula, New Zealand

AU - Graham, Ian T.

AU - Pogson, Ross E.

AU - Colchester, David M.

AU - Hergt, Janet

AU - Martin, Rod

AU - Williams, Peter A.

PY - 2007

Y1 - 2007

N2 - Lanthanite-(Nd) occurs in tuffaceous, altered andesitic agglomerate in the Whitianga quarry, Coromandel Peninsula, New Zealand. The usual platy habit is represented, together with more unusual blocky equant crystals. The former show the new forms {201}, {102} and {111}, and the latter, {111}. ICPÃ¢â‚¬â€œMS analyses show that the distribution of REE (and Ga) is consistent with the formulation (Nd0.63La0.59Ce0.35Pr0.15Sm0.10Gd0.069Y0.06Eu0.03Dy0.02Ga0.01) 2.04(CO3)3ÃƒÆ’Ã‚â€šÃƒâ€šÃ‚Â·8H2O; the REE sum of 2.04 is due solely to rounding errors. The find represents the first occurrence of this rare mineral in New Zealand. The mineral formed under comparatively oxidizing conditions. The REE are probably scavenged by warm waters circulating through underlying greywackes of the Manaia Hill Group. We also characterized the lanthanite-(Nd) by X-ray diffraction (powder method) and Raman spectroscopy.

AB - Lanthanite-(Nd) occurs in tuffaceous, altered andesitic agglomerate in the Whitianga quarry, Coromandel Peninsula, New Zealand. The usual platy habit is represented, together with more unusual blocky equant crystals. The former show the new forms {201}, {102} and {111}, and the latter, {111}. ICPÃ¢â‚¬â€œMS analyses show that the distribution of REE (and Ga) is consistent with the formulation (Nd0.63La0.59Ce0.35Pr0.15Sm0.10Gd0.069Y0.06Eu0.03Dy0.02Ga0.01) 2.04(CO3)3ÃƒÆ’Ã‚â€šÃƒâ€šÃ‚Â·8H2O; the REE sum of 2.04 is due solely to rounding errors. The find represents the first occurrence of this rare mineral in New Zealand. The mineral formed under comparatively oxidizing conditions. The REE are probably scavenged by warm waters circulating through underlying greywackes of the Manaia Hill Group. We also characterized the lanthanite-(Nd) by X-ray diffraction (powder method) and Raman spectroscopy.

KW - Coromandel Peninsula (N.Z.)

KW - X-ray diffraction

KW - composition

KW - raman spectroscopy

KW - rare-earth metals

UR - http://handle.uws.edu.au:8081/1959.7/34779

M3 - Article

SN - 0008-4476

JO - Canadian mineralogist

JF - Canadian mineralogist

ER -

Pink lanthanite-(Nd) from Whitianga quarry, Coromandel Peninsula, New Zealand

Abstract

Keywords

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