褐铁矿
3.Glauconite, hematite-limonite and some chlorite are formed in syndiagenesis.
4.Any of a group of widely occurring yellowish-brown to black iron oxide minerals, essentially FeO(OH) nH2O, used as a minor ore of iron.
5.Almost all the province has iron ore, and its proven reserves of 46.73 million tons, Some local iron ore mining has been mining, mainly in Lebabi, Kanchanaburi, and chachuson, Chiang Mai, Lampang, Razor poor Timorese, Ranong,kami and so on.There are hematite, magnetite and iron brown Mine.
6.The Banhua stone as a decoeration pigment is a kind of limonite which could be transferred to hematite α-Fe_2O_3 and magnetite in the heating process, so the porcelain surface was covered with black or brown design deeoration.
7.Huangmei has a rich reserve of underground minerals, 15 sorts are proven to have exploitation value, of which, limonite and siderite have a reserve of 58 million tons, the tenor is around 45%, being concentrated; quartz is of 100 million tons; gypsum mine is 270 million tons; barite is 500,000 tons and silex of 10 million tons; porcelain clay, limestone, shale and granite are extensively distributed and of large reserve.
8.Isotopic chronological study of mineralization show that the fluid inclusion Rb-Sr isochron age for gold-bearing pyrite-quartz veins and pyrite-limonite-quartz veins from the Dashankou gold mine are 354±8.1Ma (2σ ) and 344±21Ma (2σ ), respectively. The two ages are consistent in test errors, indicating the gold deposit was formed in early Carboniferous and related to regional shearing;
9.Evidence of emergence including sabkha dolostone, algal mat, bird-eyes and fenestral structure, mudcracks and crustose limonite has been found in the top of the Changhsingian reefs in Ziyun, Guizhou province.
10.A number of gold mines and occurrences are located in the regions of superimposed tectonic and magmatic activity in the southeastern part of the Siberian Platform, in the territory of the Aldan Stanovoi Shield.
