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Moore P B , American Mineralogist , 55 (1970) p.1146-1166, Edge-sharing silicate tetrahedra in the crystal structure of leucophoenicite ...
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Leucophoenicite was originally described from Franklin, New Jersey, by Penfield and Warren (1899). Subsequent studies of its morphology were published by Palache (1928, 1935) and Moore (1967), and optical absorption data were given by Keester and White (1966). The discovery of jerrygibbsite, a polymorph of Mn9(SiO4)4(OH...
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Hodgkinsonite and leucophoenicite, the latter especially likely to be associated with sussexite, are widespread both as replacement and as vein minerals. Willemite in particularly fine, complex crystals is characteristic of the subgroup, and franklinite, where developed in open veins, has a rare cubical habit.
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Classification of Leucophoenicite ... Type Occurrence of Leucophoenicite ... Physical Properties of Leucophoenicite...
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The proton positions in leucophoenicite, ideally Mn7Si3O12(OH)2, have been determined by neutron powder diffraction under ambient conditions on a natural sample from Franklin, New Jersey. Refinement in the P21/a space group gave Rp = 2.0% (wRp = 2.1%), 2 = 4.04 for 110 refined parameters.
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Leucophoenicite structure possesses edge-shared pairs of O 4 tetrahedra that are half-occupied by Si, and the crystals contain planar faults parallel to (001). The latter are interpreted as lamellae of other members of a proposed leucophoenicite series (analogous to the well-known humite series).
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Mn-humite and leucophoenicite families, as defined by the cation-stacking relations of ... the leucophoenicite family are simply related. They fo- ...
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Analytical data for two new occurrences of leucophoenicite, from the Kombat mine and ... mcgovernite and leucophoenicite from Kombat and Italy ...
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Early proposed relationships to leucophoenicite are invalid. Gageite is not known from Sterling Hill, but has been found at other localities (Dunn et al., 1986). ... The initial description of gageite by Phillips (1910) was of colorless acicular crystals, associated with zincite, willemite, calcite, and leucophoenicite.
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There is a lack of detailed observations in most of the mines to support conclusions based on the chemical nature of the minerals, but in the Trotter mine the relations displayed were definite ... The group of contact zone minerals comprises two overlapping subgroups. ... Minerals in the pegmatite contact zones General features...
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