Cobalt is a transition metal.

Black cobalt(III) oxide (Co2O3) is also known.

Manganese, cobalt and nickel may also occur in small amounts.

Isotopes 59Co is the only stable cobalt isotope and the only isotope to exist naturally on Earth.

The tail is cobalt (dark blue) and outside tail feathers display central yellow flashes.

The city serves as a distribution centre for such minerals as copper, cobalt, zinc, tin, and coal.

The headstock (1) contains the metal machine heads (1.1), which use worm gear for tuning.

OK, currently there are 45,000 people a month dying in the Congo, as a consequence of the war there over coltan and diamonds and other things.

Uganda has substantial natural resources, including fertile soils, regular rainfall, and sizeable mineral deposits of copper and cobalt.

The isotopes of cobalt range in atomic weight from 50 u (50Co) to 73 u (73Co).

This reaction does not involve the whole cobalt 60 nucleus, but affects only one of its 33 neutrons.

One case occurred at Yanango where a radiography source was lost, also at Samut Prakarn a phosphorus teletherapy source was lost and at Gilan in Iran a radiography source harmed a welder.

Copper Copper can be extracted using hydroxyoximes as extractants, a recent paper describes an extractant that has a good selectivity for copper over cobalt and nickel.

In late 1971, the Duke, who was a smoker from an early age, was diagnosed with throat cancer and underwent cobalt therapy.

On February 19, 1937, a Royal Decree issued by Queen Wilhelmina finally laid down the red, white and blue colours as the national flag (heraldic colours of bright vermilion, white and cobalt blue).

The second decision was to occasionally ignore the order suggested by the atomic weights and switch adjacent elements, such as tellurium and iodine, to better classify them into chemical families.

The American Deluxe Telecaster (introduced in 1998 upgraded in 2004, 2008, and 2010) features a pair of Samarium Cobalt Noiseless pickups and the S 1 switching system.

Pyroxenes have the general formula XY(Si,Al)2O6 (where X represents calcium, sodium, iron 2 and magnesium and more rarely zinc, manganese and lithium andY represents ions of smaller size, such as chromium, aluminium, iron 3, magnesium, manganese, scandium, titanium, vanadium and even iron 2).

By the early 19th century, synthetic and metallic blue pigments had been added to the range of blues, including French ultramarine, a synthetic form of lapis lazuli, and the various forms of Cobalt and Cerulean Blue.

Plutonium gallium cobalt alloy (PuCoGa5) is an unconventional superconductor, showing superconductivity below 18.5 K, an order of magnitude higher than the highest between heavy fermion systems, and has large critical current.

Even a relatively small amount of material such as cobalt 60 used in radiotherapy could cause serious harm if combined with conventional explosives in a so called dirty bomb (or otherwise deliberately used to expose the public to dangerous radiation).

Armaments Tungsten, usually alloyed with nickel and iron or cobalt to form heavy alloys, is used in kinetic energy penetrators as an alternative to depleted uranium, in applications where uranium's radioactivity is problematic even in depleted form, or where uranium's additional pyrophoric properties are not required (for example, in ordinary small arms bullets designed to penetrate body armor).