【摘要】 <正> 关于橙玄玻璃研究工作的报道已有很多（Peacock,1926; Peacock和Fuller1928;Hoppe,1941;Jonssen,1961;Bonatti,1965,Moors,1966;Hay和Iijima,1968a,b: Trichet,1969; Peirce,1970; Stokes,1971;Honnorez,1972; Jakobssor1972;Frey等,1973;Melson,1973; Thompson,1973; Furnes,1974,1975;Furnes,1978,1980）.橙玄玻璃是由无水（或含水很少）的玄武玻璃-碎云玻璃变化而来的,呈橙-红褐色,硬度低,折光率变化大,即使在一小块碎片上就有很大的变化.碎云玻璃变化为橙玄玻璃一般认为有两种情况:一种是被水淹没过;另一种是受热泉作用的结果.前者可形成均质的橙玄玻璃胶;后者可产生具纤维状结构（有双拆射）的橙玄玻璃.关于橙玄玻璃形成的机制有三种认识,即水化、脱玻化和溶解一沉淀的机制.碎云玻璃变化为检玄玻璃的特征是,主要金属氧化物总量减少,Fe²⁺氧化为Fe³⁺,水的含量增加（最多可达28%）,折射率降低,体积增加（多数作者认为是等体积的）,在海洋和非海洋条件下橙玄玻璃化的化学变化有些不同.在前一条件下K₂O增加,而Cr减少.橙玄玻璃是不稳定的,失水后可变为绿泥石和沸石等矿物.更多还原

【Abstract】 A palagonite fragment in the manganese nodule colleted from Atlantic Ocean is studied. In addition to its optie character, specific gravity, hardness and main chemical composition, differential thermal analysis and infrared spectra for palagonite are made in order to reveal the source of the palagonite fragment and its function in material sources of the manganese nodules. It is concluded that: 1.This palagonite, being core of manganese nodule, probably altered from basalt-tuf f transported from neighbouring volcanic center. 2. In the process of palagonitization iron and manganese were released, the iron-manganese material formed manganese nodules, may be, derived mainly from palagonitization of basaltic rock and weathering of basaltic and andesite rock, and probably partial material originated from neighbouring volcanic emanation and geothermic current.更多还原