Journal of Mineralogical and Petrological Sciences
Online ISSN : 1349-3825
Print ISSN : 1345-6296
Abuite, CaAl2(PO4)2F2, a new mineral from the Hinomaru–Nago mine, Yamaguchi Prefecture, Japan
Satomi ENJUSeiichiro UEHARA
Author information

Volume 112 (2017) Issue 3 Pages 109-115

Download PDF (2978K) Contact us

Abuite was found in hydrothermally altered rocks in the Hinomaru–Nago mine, Kiyo area, Abu, Abu County, Yamaguchi Prefecture, Japan (34°53′N 131°52′E). Abuite is often included in aluminum phosphate rich samples, embedded with quartz and augelite and/or trolleite, and is often accompanied by other phosphates especially apatite and crandallite. Abuite is transparent and colorless with white streak and vitreous luster. It is very difficult to find them in bare eyes, since the dominant phases in aluminum phosphate rich samples, augelite, trolleite, and quartz, are all also transparent and colorless. The empirical formula of abuite (based on 10 anions pfu, O = 8, F + OH = 2) is (Ca0.99Sr0.01)1.00Al1.96P2.03O8(F1.89OH0.11). H2O was calculated by stoichiometry. The simplified formula is CaAl2(PO4)2F2. Abuite is the calcium analogue of SrAl2(PO4)2F2, which was synthesized by hydrothermal methods (Le Meins and Courbion, 1998). The crystal structure is orthorhombic, with space group P212121. Unit cell parameters refined from the obtained X–ray diffraction pattern are a = 11.818(2), b = 11.993(3), c = 4.6872(8) Å and V = 664.3(2) Å3, with Z = 4.

Information related to the author
© 2017 Japan Association of Mineralogical Sciences
Next article

Recently visited articles
Journal news & Announcements
  • Vol.31 (1944) No. 5 and No.6 in the predecessor journal ″The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists″ are missing in this WEb site.You can see them at the following WEB site: