1
The copper specimen was the red oxide, and yielded as follows:
2
When ignited it loses oxygen, and is converted into red oxide.
3
The red oxide corresponds to the black oxide of iron.
4
The sulphate of iron, put in a small crucible, and lightly calcined, produces a suitable red oxide.
5
In 1774, Joseph Priestly, a nonconformist minister, schoolmaster, and tutor, discovered oxygen by heating red oxide of mercury.
6
Under atmospheric influences the iron would rapidly oxidize and rust away, coloring the adjacent soil with red oxide of iron.
7
Between the two peaks of the Silla, angular fragments of cellular quartz are found, covered with red oxide of iron.
8
Manganese forms no less than six different oxides-viz., protoxide, sesquioxide the red oxide, the binoxide or peroxide, manganic acid, and permanganic acid.
9
The company procures ore from a hill, near the furnace, in which there is an apparently inexhaustible supply of red oxide and brown specular.
10
The cells of the scoriaceous basalt are lined or filled with fine, concentric layers of chalcedony, coated and studded with bright- red oxide of iron.
11
In the next case (17) are the Oxides of Copper; bismuth; red oxide of zinc; cobalt ochres; oxide of uranium; and pitch ore.
12
A large bed of compact red oxide of iron lies at the eastern base of the Catoctin Mountain, on the margin of the Potomac River.
13
The ore bodies consist chiefly of the red oxide of iron (hematite) and occur in troughs of the strata, underlain by some impervious rock.
14
240, 12 parts; red oxide of iron, 1 part.
15
The ores obtained from this copper mine had been chiefly red oxides, very rich blue and green carbonates, including malachite, and also native copper.
16
Red Oxide is distinguished from Erubescite, which it alone resembles, by its darker color, higher specific gravity, and yielding a globule of pure copper.