《天工开物·中篇·燔石》
石胆又叫做胆矾，产自陕西省隰县等地。胆矾是在山崖洞穴中自然结晶的，因此它的绿色具有宝石般的光泽。
石胆一名胆矾者，亦出晋、隰等州，乃山石穴中自结成者，故绿色带宝光。
Lithobil is also known as胆矾 (dǎn fán) and is produced in places such as Xi County, Shaanxi Province. Lithobil is naturally crystallized in caves on cliffs, so its green color has a gemstone-like luster.