A cross-sectional exploratory study was conducted to describe the psychosocial health status of persons seeking health care for exposure to Libby amphibole asbestos (LAA). Health indicators including depression, stress, acceptance of illness, and satisfaction with access and financial aspects of care were obtained via electronic and paper-pencil survey. The exposure pathway and demographic data...

The crystal structure of gem-quality pargasite from Soper River, near Kimmirut, Baffin Island, Nunavut, Canada, (K0.24Na0.73) 0.97 (Ca1.86Na0.14) 2.00 (Mg4.15Fe0.07Mn0.01Al0.71Ti0.06) 5.00 (Si6.45Al1.55) O22 [(OH)1.25F0.63O0.12] 2.00, a 9.8814(6), b 17.967(1), c 5.2927(4) Å, 105.263(5)°, V 906.5 Å3, C2/m, Z = 2, has been refined to an R index of 2.9% using 1506 observed intensities measured wit...

Three-dimensional counter-diffractometer data and a full-matrix least-squares method have been used to refine the crystal structure of a sub-silicic hastingsite in the space group C2/rn. The chemical composition of the amphibole is Na~.95K~.a~Cax.~4(Mg1.17Fe~+7Mn~.~4Ti~.39Fe~9A~.5~)Si5.2~A~2.~3~22.5~(~H)x.a4 with ceil parameters a = 9"8659(4), b = I8"OI39(8), c = 5'3545(2)-&, and fi = IO5O82(1)...

Asbestos is one of the main occupational carcinogens recognized and studied in the literature. Its uses have undergone major changes in recent decades, with severe restrictions on commercial amphiboles according to different patterns: in developed countries asbestos is strictly controlled or banned, except in Japan, while in developing countries consumption has leveled off or increased. As an e...

Details are given of the techniques used in the analysis of asbestiform fibers in the water systems of Duluth, Minnesota and other cities. Photographic electron diffraction and electron microprobe analyses indicated that the concentration of verified amphibole mineral fibers ranged from 20 x 10(6) to 75 x 10(6) fibers/l. Approximately 50-60% of the fibers were in the cummingtonite-grunerite ser...

The structure refinement of a hastingsite (CI 0.91 p.f.u.) from West Ongul Island, Liitzow-Holm Bay, East Antarctica, has been carried out in order to characterise the effect of CIon the crystal structure. The composition of the CI-rich hastingsite is KO.69Nao.26Ca1.99Mg1.09Fe2+ 2.71Fe3+O.92MnO.\l4 Tio.lOAI2.31Sis.R30220Ho.99Clo.91Fo.10with unit cell parameters a 9.962(3), b 18.283(7), c 5.372(...

APG2 is a computer application designed for amphibole-plagioclase geothermobarometry. It is the first updated version of APG and supports 4 thermometer models and 6 barometer models involving either amphibole-plagioclase or amphibole only. APG2 has capability to integrate all 4 thermometer models with 6 barometer models and produce 24 different states which user can export them all at once to a...