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Genesis of the hydrothermal gold system in the kibaran metallogenic province (D.R.Congo): A review for the Twangiza-Namoya gold belt. [PDF]
HeliyonHeritier RN +4 more
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Common misconceptions in crystallography and crystal optics. [PDF]
J Appl CrystallogrCasas L.
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Electrocardiographic Age and Clonal Hematopoiesis of Indeterminate Potential. [PDF]
JACC Basic Transl SciKhurshid S +7 more
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Preparation and Performance of a Novel ZnO/TM/PET Composite Negative Ion Functional Fiber. [PDF]
Polymers (Basel)Zhang M +6 more
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IL6 genetic perturbation mimicking IL-6 inhibition is associated with lower cardiometabolic risk. [PDF]
Nat Cardiovasc ResZhang L +5 more
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Potentially Toxic Elements and Natural Radioactivity in Nasser Lake Sediments: Environmental Risks in a Key Egyptian Freshwater Lake. [PDF]
ToxicsEl-Shlemy ES +5 more
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Physics and Chemistry of Minerals, 1984
Red Fe^(3+)-rich and black Fe^(3+), Fe^(2+)-rich tourmalines have been studied by optical and Mossbauer spectroscopies to determine the optical characteristics of Fe^(3+) in tourmaline. Prominent optical absorption features at 485 and 540 nm are assigned to transitions of multiple exchange-coupled Fe^(3+) pairs in several site combinations.
Mattson, Stephanie M. +1 more
openaire +2 more sources
Red Fe^(3+)-rich and black Fe^(3+), Fe^(2+)-rich tourmalines have been studied by optical and Mossbauer spectroscopies to determine the optical characteristics of Fe^(3+) in tourmaline. Prominent optical absorption features at 485 and 540 nm are assigned to transitions of multiple exchange-coupled Fe^(3+) pairs in several site combinations.
Mattson, Stephanie M. +1 more
openaire +2 more sources
POLYHEDRON DISTORTIONS IN TOURMALINE
The Canadian Mineralogist, 2002Distortion parameters [?, s2, DI(Y-O), DI(O-Y-O), DI(O-O)] have been calculated for cation polyhedra in tourmalines of different chemical compositions. Tourmalines with greater amounts of small, highly charged ions in the YO6 octahedron display greater bond-length distortion in Y. The size and charge of the occupants at the Y site have been included in
Ertl, Andreas +6 more
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