甘肃省古浪县红湾沟石膏矿地质特征  

Gulang County,Gansu Province Hunghom Ditch Gypsum Mine Geological Characteristics

作　　者：谈应范[1] TAN Ying-fan(Lanzhou Mineral Exploration, Gansu Province Nonferrous Geological Exploration Bureau,Lanzhou 730046,Chin)

机构地区：[1]甘肃省有色金属地质勘查局兰州矿产勘查院,甘肃兰州730046

出　　处：《甘肃冶金》2017年第5期76-78,共3页Gansu Metallurgy

摘　　要：矿区大地构造位置上属于北祁连山加里东褶皱带东段北缘,按构造体系属祁连、贺兰山字形构造的阿宁盾地,又位于陇西大型箒状旋扭构造体系的古浪-同心旋回褶带上。矿区出露地层(自新而老)主要有上三叠统延长群(T_(3yn))、中下三叠统(T_(1-2)),上二叠统窑沟群(P_(2yg))、下二叠统大黄沟群(P_(1dh)),石炭系上统太原组(C_(3t))、中石炭统羊虎沟组(C_(2y))、下石炭统臭牛沟组(C_(1c)),上泥盆统沙流水群(D_(3sh)),中奥陶统中堡群(O_(2zh))、下奥陶统车轮沟群(O_(1ch))。石膏矿产于下石炭统臭牛沟组地层中。矿床成因类型:古泻湖相沉积成因类型。矿物主要为普通石膏、硬石膏、脉石矿物为方解石、泥质、石英等。Mining area tectonic position belongs to the east north qilian caledonian fold belt of northern, according to the structural system of qilian, helan mountain glyph structure ginny shield, and is located in west gansu large tiao shear tec- tonic system of the ancient sea - concentric cycle fold belt.Mining area of outdoor layer （from the new and old） are mainly on Triassic extended group （ T3yo ） , middle and lower Triassic （ T12 ） , in the Permian system kiln ditch group （ P2ys ） , rhubarb groove group of lower Permian （ Pldh ） , on the carboniferous, taiyuan group （ C3t ） of the middle carboniferous sheep tiger groove group （C2y） and lower carboniferous smelly cattle groove group （ClC）, on the devonian series sand group （D3sh） , water in the ordovician in the fort group （02zh ） and lower ordovician wheel groove group （O1ch ）. Gypsum mines which are found in the carboniferous smelly cattle groove group formation.Deposit genetic types： The ancient lagoon facies sedimentary genetic types.Minerals are mainly ordinary gypsum and anhydrite, calcite, shale, gangue mineral is quartz, etc.

关 键 词：地质特征 石膏矿 古泻湖相沉积成因类型 

分 类 号：P578.72[天文地球—矿物学]