红色花岗岩中的赤铁矿及岩石中赤铁矿的人工合成

通过对红色花岗岩的研究，发现红色花岗岩的成色矿物为赤铁矿。赤铁矿主要赋存在长石等矿物的解理缝及其显微缝隙中，赤铁矿的含量越多，颜色越红。本文对赤铁矿的成因作了简要分析，认为红色花岗岩中的赤铁矿大多为高氧逸度条件下的产物。由此设计了在花岗岩中人工合成赤铁矿的技术方法，对重要技术参数做了说明。通过在花岗岩中人工合成赤铁矿，可使普通浅色（灰白、浅肉红色）花岗岩改变为红色，对提高普通花岗岩的利用率有一定意

Artificial Synthesis of hematite in Red Granite and in Rocks

A study of red granite reveals that the color_forming mineral in red granite is hematite. Hematite mainly occurs in cleavage cracks and microfissures of such mi nerals as feldspar, and the higher the hematite content, the deeper the red colo r. Based on a brief analysis of the genesis of hematite, the authors hold that h ematite in red granite was mostly produced under the condition of high oxygen fu gacity. Hence, this paper has designed a technology for artifically synthesizing hematite, with important technological parameters illustrated. The artificial s ynthesis of hematite in granite can turn the color of common ligh_colored granit e from grey or yellowish pink to red, which is of some significance in raising t he utilization coefficient of common granite.