FRANKLIN AND STERLING HILL NEW JERSEY: THE WORLD'S MOST MAGNIFICENT MINERAL DEPOSITS
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The apatite group

FLUORAPATITE

HEDYPHANE

JOHNBAUMITE

MIMETITE

TURNEAUREITE


Other arsenates, arsenites, phosphates, and vanadates

ADAMITE

ADELITE

AKROCHORDITE

ALLACTITE

ANNABERGITE

ARSENIOSIDERITE

AUSTINITE

BARIUM-
PHARMACOSIDERITE

BRANDTITE

CAHNITE

CHLOROPHOENICITE

CLINOCLASE

CONICHALCITE

DESCLOIZITE

DUFTITE

ERYTHRITE

EUCHROITE

EVEITE

FLINKITE

FLUCKITE

GUERINITE

HAIDINGERITE

JAROSEWICHITE

KOETTIGITE

LEGRANDITE

LIROCONITE

MAGNESIUM-
CHLOROPHOENICITE

MAGNUSSONITE

MANGANBERZELIITE

MANGANESE-
HOERNESITE

META-ANKOLEITE

METALODEVITE

METAZEUNERITE

NEWBERYITE

NIAHITE

OGDENSBURGITE

OJUELAITE

PARABRANDTITE

PARASYMPLESITE

PHARMACOLITE

PHARMACOSIDERITE

PICROPHARMACOLITE

PYROBELONITE

RETZIAN-(La)

RETZIAN-(Nd)

SARKINITE

SCORODITE

STERLINGHILLITE

SYNADELPHITE

TILASITE

URANOSPINITE

VILLYAELLENITE

WALLKILLDELLITE

WENDWILSONITE

YUKONITE

 

TURNEAUREITE

Ca5(AsO4)3Cl
Hexagonal

Turneaureite was first described from Franklin, New Jersey; Långban, Sweden; and Balmat, New York, by Dunn et al. (1985b). It has not been found at Sterling Hill.

Description

Franklin turneaureite occurs only as massive material. Hand-sized specimens are known; most are smaller. Turneaureite is white to grayish white to colorless with a subvitreous to slightly greasy luster. Cleavage was not observed. The hardness is approximately 5. Optically, turneaureite is uniaxial, negative, with indices of refraction near w = 1.708 and e = 1.700. Turneaureite is fluorescent with a bright orange color in shortwave ultraviolet; phosphorescence is weakly discernible. It is best verified using quantitative chemical tests and X-ray methods.

Composition

Turneaureite is a calcium arsenate chlorine mineral of the apatite group and the Cl analogue of johnbaumite. An analysis is presented in Table 24.

Occurrence and paragenesis

Turneaureite occurs as massive specimens, some larger than 5 cm in diameter, composed of massive turneaureite as the dominant mineral. It is associated with centimeter-sized aggregates of andradite, magnetite, and pink manganoan calcite. It may have been locally abundant.

Name

Turneaureite was named in honor of Dr. Frederick Stewart Turneaure of the University of Michigan, in recognition of his contributions to the study of mineral deposits.

 

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Copyright © 1995 by Pete J. Dunn
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CHAPTER 25. ARSENATES, ARSENITES, PHOSPHATES, AND VANADATES