Upon her return to the United States, Handler reworked the design of the doll (with help from engineer Jack Ryan) and the doll was given a new name, Barbie, after Handler's daughter Barbara. The doll made its debut at the American International Toy Fair in New York on March 9, 1959.pon her return to the United States, Handler reworked the design of the doll (with help from engineer Jack Ryan) and the doll was given a new name, Barbie, after Handler's daughter Barbara. The doll made its debut at the American International Toy Fair in New York on March 9, 1959.
The mineral pyrite, or iron pyrite, is an iron sulfide with the formula FeS2. This mineral's metallic luster and pale-to-normal, brass-yellow hue have earned it the nickname fool's gold because of its resemblance to gold.
The chemical formula for Pyrite is FeS2 (Iron sulphide). It is a naturally occurring mineral; it is the most abundant Sulphide mineral on the earth. Pyrite or iron pyrite is also used to name Iron sulphide.Also, Foolâs gold is another name for Pyrite. The word Pyrite is a Greek word; the word pyr means fire. In early days, this had been used to make fire by striking against metal or any other hard material.owever, when you closely monitor the color of these two materials, gold and pyrite, the difference between gold and pyrite can be understood easily. It is the first simple method of distinguishing one from another.