gray hematite 中文意思是什麼
gray hematite
解釋
鏡鐵礦-
He found that the red pigment proved to be iron oxide, hematite ; a yellow consisted of clay containing iron or yellow ochre ; a blue color was a finely powdered glass ; and a pale blue was a copper carbonate, probably azurite ; green were malachite ; black was charcoal or boneblack ; gray, a limestone mixed with charcoal ; and a quantity of pigment remaining in a paint pot used in the decoration, contained a mixture of hematite with limestone and clay
他發現紅顏料是鐵的氧化物赤鐵礦；黃色顏料由含有鐵或黃赭色粘土組成；藍顏色為細微的玻璃粉；而普藍就是碳酸銅，或許是藍銅礦；綠顏料為孔雀石；黑色為木炭或骨黑；灰色，石灰石混合木炭而成；而一些顏料殘留在用於彩繪裝飾的顏料瓶里，含有赤鐵礦與石灰石及粘土的混合物。 -
This hematite is gray, however, because the grain size is larger. ) the layering of these distinct rock types indicates that the huronian glaciations occurred precisely when atmospheric oxygen levels first rose
這些層次分明的巖種，暗示著休倫冰期恰好發生於大氣中的氧氣濃度初升之際。
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