Thus C stands for carbon, Cl for chlorine, Cd for cadmium, Ce for cerium, Cb for columbium.    From Wordnik.com.  [An Elementary Study of Chemistry] Reference

In the presence of columbium the solution first becomes blue and then changes to a turbid brownish-black.    From Wordnik.com.  [1.1 Blow pipe assaying] Reference

These minerals are the principal sources of columbium (commonly called niobium), tantalum and molybdenum metals.    From Wordnik.com.  [Rhenium] Reference

Possible substitutes for molybdenum as a strengthening alloy in steel include vanadium, chromium, columbium, and boron.    From Wordnik.com.  [Molybdenum] Reference

The nozzle material is made of columbium and heats up during the test causing the color change.    From Wordnik.com.  [Space Business and Industry News at SpaceMart.com] Reference

He was working for the British Museum and analyzed a sample of the mineral columbite when he identified a previously unknown element he called columbium.    From Wordnik.com.  [About.com Chemistry] Reference

His claim was refuted when another English chemist named William Hyde Wollaston claimed Hatchett's columbium was just another form of the element tantalum.    From Wordnik.com.  [About.com Chemistry] Reference

The company said that the surcharge is necessary to offset the rapid and unpredictable changes in columbium prices, which is used in the manufacture of some of its specialty alloy products.    From Wordnik.com. Reference

Materials classified as carbon steel might also contain small amounts of other elements, such as chromium, nickel, molybdenum, copper, vanadium, niobium (columbium), phosphorous, and sulfur.    From Wordnik.com.  [CR4 - Recent Forum Threads and Blog Entries] Reference

(proposed as an element in 1815: see Conversation XIX) “columbium or tantalium” = niobium and tantalum.    From Wordnik.com.  [Conversations on Chemistry, V. 1-2 In Which the Elements of that Science Are Familiarly Explained and Illustrated by Experiments] Reference

Those commodities are gold, diamonds, columbium-tantalite (coltan), platinum and natural gas. ".    From Wordnik.com.  [Signs of the Times] Reference

CRS - News) today announced it will implement a columbium Cb / Nb) surcharge effective with shipments beginning March 1, 2011.    From Wordnik.com. Reference

These include columbium, molybdenum, titanium, and tungsten.    From Wordnik.com.  [Vanadium] Reference

Testing for: molybdenum, tungsten, vanadium, columbium, titanium.    From Wordnik.com.  [1.1 Blow pipe assaying] Reference

These include diamonds, gold, columbium-tantalite, cobalt, copper, petroleum, germanium, tin, tungsten, palm oil, coffee and chocolate (sold in Whole Foods groceries stores).    From Wordnik.com.  [WHAT REALLY HAPPENED]

Minerals on the critical list are antimony, beryllium, cobalt, fluorspar, gallium, germanium, graphite, indium, magnesium, niobium (also known as columbium), platinum group metals (PGMs), rare earths, tantalum and tungsten.    From Wordnik.com.  [Resource Investor - Main Content Feed] Reference

These are platinum, gold, tungsten, mercury, lead, palladium, silver, bismuth, uranium, vanadium, copper, cadmium, cobalt, arsenic, nickel, iron, molybdenum, tin, zinc, antimony, tellurium, manganese, tatiaum, chromium, columbium, rhodium, iridium, osmium, cerium.    From Wordnik.com.  [The Mines and its Wonders] Reference

Besides those which Sir H. Davy has obtained, there are several that have been recently discovered, whose properties are yet but little known, as for instance, titanium, which was discovered by the Rev.Mr. Gregor, in the tin-mines of Cornwall; columbium or tantalium, which has lately been discovered by Mr. H.tchett; and osmium, iridium, palladium, and rhodium, all of which Dr. Wollaston and Mr. Tennant found mixed in minute quantities with crude platina, and the distinct existence of which they proved by curious and delicate experiments.    From Wordnik.com.  [Conversations on Chemistry, V. 1-2 In Which the Elements of that Science Are Familiarly Explained and Illustrated by Experiments] Reference