一概述应城石膏矿区的工业指标,是57年在鄂中地质队进行勘探工作过程中确定的,据此该队提交了张盛和龙王集两份储量报告。当时矿山正开采王家庙9膏组。指标中按每吨石膏调拨价37元不赔不赚计算,确定纤膏工业含矿率为单层13%、多层14%;同组共生的泥膏鉴于国内外使用情况,确定其工业品位为65%;同时确定的硬石膏CaSO_4≥70%,因硬石膏不属矿区勘探对象而无意义。该指标中规定泥膏单层厚度≥10厘米时才计算储量,显然要求过高,因此使储量计算结果偏低。另外,指标中规定泥膏含矿率单层40%、多层60%,因矿区实际上未单独开采泥膏,因而也不具意义。从1959年起至1977年底止该指标共修订了三次(表1)。虽然纤膏调拨价最后降到25元/吨,但纤膏工业含矿率仍坚持14%没有改变。1977年修订的工业 An overview of the industrial indicators of Yingcheng gypsum mining area was determined during the exploration work of the geological team in Hubei Province in 57 years. Accordingly, the team submitted two reserves reports of Zhangsheng and Longwangji. At that time, the mine is mining Wang Jia Temple 9 cream group. Indicators, according to the price of 37 yuan per ton of gypsum transfer price does not lose no calculation, to determine the flotation industry ore content of 13% of single-layer, multi-layer 14%; symbiosis slurry with the same group in view of domestic and international use, to determine its industrial grade Is 65%; at the same time, the determined anhydrite CaSO_4≥70% is not meaningful because anhydrite is not an exploration target in the mining area. The indicator provides that when the thickness of mud layer is not more than 10cm, it is obvious that the requirement is too high, so the calculation result of reserves is too low. In addition, the indicator stipulates that the mined ore contains 40% monolayer and 60% multi-layer, which is of no significance because the mining area has not actually been used for mire. The indicator has been revised three times from 1959 until the end of 1977 (Table 1). Although the transfer price last adjusted to 25 yuan / ton, but the flotation industry ore content still insist 14% did not change. Industry revised in 1977