The IgarapÃ© Bahia gold deposit has developed from weathering of a near-vertical hydrothermal Cu (Au) mineralization zone. The unweathered bedrock composed of chlorite schists is mainly metamorphosed basalts, pyroclastic and clastic sedimentary rocks and iron formation.
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Part of the Internet technologies glossary: Bitcoin is a digital currency (also called crypto-currency) that is not backed by any country's central bank or government.Bitcoins can be traded for goods or services with vendors who accept Bitcoins as payment.itcoin is a digital currency (also called crypto-currency) that is not backed by any country's central bank or government.