Geological Features And Metallogenic Potential Analysis Of Ertaizi Phosphorus-titanium Magnetite Deposit

On the basis ZiYang county-zhenping county, shanxi province area1:200000regionalgeological map of mineral deposits.The the latest research achievements and researchprogress of Phosphorus-titanium magnetite deposit is the premise of this article. During thefield surveys, geological characteristics, alteration characteristics, ore sources andore-controlling factors, etc., have been studied, and the prospecting direction have beenpointed out. As a result, we have the understanding as follows:1. Regional magmatic rocks, the strata are distributed in a large number of near-beddedgabbro intrusive diabase dyke dykes along the NW-SE trending fault zone flocks output, theextending direction consistent with the regional tectonic lines, is veined intrusions. Diabasegabbro is magmatic apatite-titanium magnetite ore rock. Ore diabase region has obviousdifferentiation phenomenon, by the rock edge to the inside edge of the phase can be clearlyseparated, light phase, dark phase three phase belt. In each of the light phase and the darkphase among the rocks by the edge to the center size display from particles-Small Medium-coarse changes.2. By gravity anomalies and their interpretation infer infer G28, G27exception from thedensely distributed diabase dikes, gabbro dyke swarms cause; G29,G30abnormal distributionin Tiefo-Barracks Street East fault with G27, G28has the same anomaly of anomaly. And inthe toon had Xiangjiaba dam a fault occur within120-2000nT magnetic anomaliesbackground. The area is located Ertaizi M（3）1anomaly is the biggest strength of the studyarea abnormal abnormal strength of350-500nT. This class aeromagnetic anomalies generallyalong the fault zone, and with the distribution of diabase along the fault outcrop is veryconsistent, indicating aeromagnetic anomalies and regional faults very closely. Magneticanomaly distribution area is finding magmatic titanomagnetite important region.3. Ertaizi phosphorus-titanium magnetite as the Yangtze platform margin than the typicalmetal mineralization types, this paper compares depth research. Rock by the diabase andgabbro diabase. NW trending mostly individual NE. The rocks are gray green, diabase andmassive structure, the main mineral plagioclase and pyroxene, with minor hornblende,pyrrhotite minerals, ilmenite and secondary alteration minerals green mudstone, epidote andsatisfied zoisite and so on. Ore and rock no obvious boundaries, generally showed a gradualtransition between the ore structure dominated by disseminations. Mineralized rock producedin the light phase and the dark phase of the transition area. This is the role of magmatic differentiation salient features.4. Ertaizi phosphorus-titanium magnetite ore rock geochemistry full alkali-silicadiagram cast figure, mafic dikes investment point of all the samples are more concentrated, inaddition to a sample invested in trachyandesites outside the region, the rest were landedtephrite rocks and picrites range area, the samples are all located above the line Ir, an alkalinerock series. Overall SiO₂content is relatively low, with an average of42.55%, with aconsiderable intraplate basalts. Na₂O content in this area is much higher than K₂O, Na₂O/K₂Oat1.24to6.92, with an average of3.36; is a typical sodic alkaline rocks. MgO content ofbetween4.03%¹1.44%, an average of6.50%. TiO₂content of2.62%⁵.93%, averaging4.55%, Al₂O₃content is high, ranging between12.11%¹7.32%, an average of14.24%. RockFe₂O₃（T）/（Fe₂O₃（T）+MgO） values from0.56to0.80, there are iron-rich trend is iron maficrocks. Study area dyke REE ΣREE varied greatly, the total is relatively low, LREE enrichment;these features suggest that the study area titanomagnetite is the northern margin of theYangtze Block Early Paleozoic mantle low degree partial melting effect on invasion ofcemented mine results.5. Mines in South Qinling Bashan North Caledonian basement uplift Zhenping rift zonewith the northern margin of the western end of the official dollar-Immortals fault zone andits sides, black rock strata outcropping extensive faults developed, the two stand-hui ore longtrending diabase dikes intruded cover nearly bedding black rock strata, the12km long dyke,in Tiefo-Ertaizi phosphorus-vanadium-titanium magnetite ore prospect areas at the easternend, the use of a comprehensive analysis of the method, the magmatic profiled （phosphorus）prospecting direction titanomagnetite analyzed to Inferred Ertaizi Vision ofphosphorus-titanium magnetite zone large scale, with prospecting potential.