Strictly, only iron and its alloys "rust" and all other metals do not, because the verb "rust" strictly means to form iron oxide from iron. The more general term for metals is "corrode", and almost all elemental metals except gold, platinum, iridium, osmium, rhodium, ruthenium, and palladium corrode under some conditions that are at least moderately prevalent on earth. Any metal can be dissolved in some liquid under laboratory conditions, so that this kind of question is qualitative at best.
17 years-old is the age specified in the Wyoming Emancipation Statute.
Graphite in CanadaThere are 2 types of graphite - natural and synthetic. Natural graphite is black with a sub-metallic lustre, feels greasy and stains the fingers. Graphite is found mainly in METAMORPHIC ROCKS, most frequently in schist and as small crystals in impure marbles in association with other minerals.
Timcal Canada Inc, in Lac-des-�les, Quebec, is the only graphite producer in Canada. Other producing countries are Ukraine, Brazil, India, North Korea, Republic of Korea and Mexico.
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Lava is constituted of magma, molten rock formed deep inside Earth. When lava is thrown out of an erupting volcano, it is a liquid at temperatures from 700 °C to 1,200 °C (1,300 °F to 2,200 °F). Its color is red-hot, but as the lava cools downs and solidifies in rocks, it turns to the same rock color.