红玄武土颗粒：微小的松软土，尤指用作颜料的一种红棕色粘土。
Any of various soft, fine clays, especially a reddish-brown variety used as a pigment.
红色硫化汞，通过将水银与硫磺加热而得到的一种明亮的深红色粉末，用作颜料。
Red mercuric sulfide, a bright scarlet powder derived from heating mercury with sulfur, used as a pigment.
黑色硫化汞，是来自于汞盐或通过水银与硫磺反应而得到的一种黑色粉末，用作颜料。
Black mercuric sulfide, a black powder obtained from mercury salts or by the reaction of mercury with sulfur, used as a pigment.
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