这是什么石头?

2025-03-18 02:59:01
推荐回答(5个)
回答1:

石煤。

石煤是一种含碳少、发热值低的劣质无烟煤,又是一种低品位多金属共生矿。生成于古老地层中,由菌藻类等生物遗体在浅海、泻湖、海湾条件下经腐泥化作用和煤化作用转变而成。外观像石头,肉眼不易与石灰岩或碳页岩相区别,高灰分(一般大于60%)深变质的可燃有机矿物。含碳量较高的优质石煤呈黑色,具有半亮光泽,杂质少。相对密度为1.7~2.2。含碳量较少的石煤,呈偏灰色,暗淡无比,夹杂有较多的黄铁矿、石英脉和磷、钙质结核、相对密度在2.2~2.8之间,石煤发热量不高,在3.5~10.5MJ/kg之间,是一种低热值燃料。热值偏高的石煤,在改进燃烧技术后,可用作火力发电的燃料,石煤可用作烧制水泥、制造化肥。灰渣制碳化砖等。伴有生矾的石煤,可提取五氧化二钒。目前,在我国石煤资源中已发现的伴生元素多达60多种,其中可形成工业矿床的主要是钒,其次是钼、铀、磷、银等等。含钒石煤遍布我国20余个省区,仅浙江至广西一条长约1600多公里的石煤矿,就蕴含着1亿吨以上的五氧化二钒。

回答2:

天然水底硅化沉积石,质地细腻坚硬,石纹好看,状态自然的,真品喜欢就可以当一个品种收藏。

回答3:

烧烤用的木炭或者煤

回答4:

我觉得他就是煤炭

回答5:

这看着是煤炭。

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