论文部分内容阅读
1988年5月笔者在豫北某地中石炭统本溪组底部、中奥陶统马家沟组顶部面型古风化壳中,发现外观类似本溪组“焦宝石”样的岩石。该岩石产出处,四周都为中奥陶统马家沟组灰岩露头。中石炭统本溪组底部地层及中奥陶统马家沟组顶部古风化壳残存于古喀斯特溶斗中。这种岩石呈透镜体结核状赋存于黄色、紫红色铁质粘土中。该岩石呈浅灰—深灰色,块状构造,结构致密细腻;性脆,敲击之易碎裂而呈尖棱角状碎块,断面光滑,断口贝壳状;具油脂及蛋白状光泽,不透明,含乳白色半透明状结核;体重2g/cm~3;莫氏硬度约为6.5度。
May 1988 I found in the bottom of the Central Carboniferous Benxi Formation in Central Henan Province, the paleocurrency crust at the top of the Middle Ordovician Majiagou Formation and found that the rocks are similar in appearance to the “coke stones” of the Benxi Formation. The rock output, surrounded by the Middle Ordovician Majiagou limestone outcrop. The bottom formations of the Middle Carboniferous Benxi Formation and the ancient weathered crust at the top of the Middle Ordovician Majiagou Group remain in the paleokarst karst caves. The rock was found in lens-like nodules in yellow, mauve iron clays. The rock is light gray - dark gray, block structure, dense and delicate structure; brittle, knocked easily fragmented and sharp angular pieces, smooth section, broken shellfish; with grease and protein-like luster, opaque, Containing milk white translucent tuberculosis; body weight 2g / cm ~ 3; Mohs hardness of about 6.5 degrees.