Geological and geochemical comparison of ore-bearing and barren porphyries
公司可以不按照正常出勤算工资。扣当天一半工资是否合法取决于当地最低工资标准,因为病假期间的工资标准为:不能低于当地最低工资标准的80%。
参照《关于贯彻执行若干问题的意见》第五十九条,职工患病或非因工伤治疗期间,在规定的医疗期内由企业按有关规定支付其病假工资或疾病救济费,病假工资或疾病救济费可以低于当地最低工资标准支付,但不能低于最低工资标准的80%。
参照《关于贯彻执行若干问题的意见》第五十四条,劳动法第四十八条中的“最低工资”是指劳动者在法定工作时间内履行了正常劳动义务的前提下,由其所在单位支付的最低劳动报酬。
最低工资不包括延长工作时间的工资报酬,以货币形式支付的住房和用人单位支付的伙食补贴,中班、夜班、高温、低温、井下、有毒、有害等特殊工作环境和劳动条件下的津贴,国家法律、法规、规章规定的社会保险福利待遇。
扩展资料
参照《中华人民共和国劳动法》第四十六条,工资分配应当遵循按劳分配原则,实行同工同酬。工资水平在经济发展的基础上逐步提高。国家对工资总量实行宏观调控。
参照《中华人民共和国劳动法》第四十七条,用人单位根据本单位的生产经营特点和经济效益,依法自主确定本单位的工资分配方式和工资水平。
参照《中华人民共和国劳动法》第四十八条,国家实行最低工资保障制度。最低工资的具体标准由省、自治区、直辖市人民政府规定,报国务院备案。用人单位支付劳动者的工资不得低于当地最低工资标准。
参照《中华人民共和国劳动法》第四十九条,确定和调整最低工资标准应当综合参考下列因素:
(一)劳动者本人及平均赡养人口的最低生活费用;
(二)社会平均工资水平;
(三)劳动生产率;
(四)就业状况;
(五)地区之间经济发展水平的差异。
参照《中华人民共和国劳动法》第五十条,工资应当以货币形式按月支付给劳动者本人。不得克扣或者无故拖欠劳动者的工资。
参照《中华人民共和国劳动法》第五十一条,劳动者在法定休假日和婚丧假期间以及依法参加社会活动期间,用人单位应当依法支付工资。
参照《关于贯彻执行若干问题的意见》第五十三条,劳动法中的“工资”是指用人单位依据国家有关规定或劳动合同的约定,以货币形式直接支付给本单位劳动者的劳动报酬,一般包括计时工资、计件工资、奖金、津贴和补贴、延长工作时间的工资报酬以及特殊情况下支付的工资等。
“工资”是劳动者劳动收入的主要组成部分。劳动者的以下劳动收入不属于工资范围:
(1)单位支付给劳动者个人的社会保险福利费用,如丧葬抚恤救济费、生活困难补助费、计划生育补贴等;
(2)劳动保护方面的费用,如用人单位支付给劳动者的工作服、解毒剂、清凉饮料费用等;
(3)按规定未列入工资总额的各种劳动报酬及其他劳动收入,如根据国家规定发放的创造发明奖、国家星火奖、自然科学奖、科学技术进步奖、合理化建议和技术改进奖、中华技能大奖,以及稿费、讲课费、翻译费等。
参考资料来源:吉林省人力资源和社会保障厅 - 执行《中华人民共和国劳动法》若干意见
参考资料来源:中国人大网 - 中华人民共和国劳动法
5.1.1 Geological comparison
The Yulong ore-bearing porphyry is a stock with the exposed area as pear-like shape,whereas the barren porphyries emplaced as a dike or sill.In spite of small outcrop area(0.64 km2)of ore-bearing porphyry,the barren porphyries show much smaller outcrop area with individual porphyry no more than 0.2 km2.The ore-bearing porphyry has a SHRIMP zircon U-Pb age of(41.0 ± 1.0)Ma,and the barren porphyry has a SHRIMP zircon U-Pb age of(38.9 ± 0.8)Ma as mentioned above.Obviously,barren porphyry intruded some 2 Ma later than ore-bearing porphyry.
5.1.2 Petrographical and mineral chemical comparison
The Yulong ore-bearing porphyry has a rock type association of monzogranite-porphyry–syenogranite-porphyry– alkali-feldspar granite-porphyry(Fig.2),whereas the barren porphyry has a rock type association of monzogranite-porphyry – quartz monzonite-porphyry(Fig.29).Barren porphyry seems to have slightly lower quartz contents than ore-bearing porphyry(Fig.29).Although both ore-bearing and barren porphyries show a typical porphyritic texture,the matrix in barren porphyry is finer than that in ore-bearing porphyry.Barren porphyry generally shows a microgranular(<0.1 mm)texture for matrix,whereas the matrix in ore-bearing porphyry generally shows a fine-grained(mostly 0.1~0.2 mm)granitic texture(Fig.30).In addition,barren porphyry contains pyroxene phenocryst besides plagioclase,amphibole,biotite,alkali feldspar and quartz phenocrysts that occur in both ore-bearing and barren porphyries.Furthermore,ore-bearing porphyry has more abundant apatite(Fig.14d)than barren porphyry.
Fig.29 Q′-Anor classification diagram
(Streckeisen and Le Maitre,1979)
Fig.30 Photomicrographs of the Yulong porphyries
(a)The ore-bearing porphyry,showing a porphyritic texture with a fine-grained(mostly 0.1~0.2 mm)granitic texture for matrix;(b)The barren porphyry,showing a porphyritic texture with a microgranular(<0.1 mm)texture for matrix.Pl—plagioclase;Kfs—K-feldspar;Bt—biotite;Hbl—amphibole;Qtz—quartz
In spite of similar compositions of feldspars in both ore-bearing and barren porphyries(Fig.31a),their biotite compositions are distinct(Table 13).Although these biotites have high MgO contents,belonging to Mg-rich biotites(Fig.31b),biotites in ore-bearing porphyry have much higher MgO contents with higher Mg/(Mg + FeT)(>0.57)ratios than those in barren porphyry(<0.54)(Table 13;Fig.32).In addition,biotites in ore-bearing porphyry have higher Fe3+/Fe2+ratios(>0.7)than those in barren porphyry(<0.7)(Table 13;Fig.32),which suggests higher fO2of magma for ore-bearing porphyry(Jiang et al.,2002).Compositions of pyroxene phenocryst in barren porphyry suggest a high temperature(~1220℃)of magma,which is in broad agreement with the homogenization temperatures of melt inclusions hosted by quartz phenocrysts of barren porphyry,ranging from 900 to>1200℃(n=63),most(n=54)≥1150℃(≥1200℃,n=41)(Li,1984).The homogenization temperatures of melt inclusions hosted by quartz phenocrysts of ore-bearing porphyry are relatively lower(about 960℃,Li,1984).
Fig.31(a)Ternary classification diagram for feldspar(Deer et al.,1992)and(b)
Classification diagram for biotite(Foster,1960)
Ab—albite;An—anorthite;Or—orthoclase;.Ⅰ—phlogopite;Ⅱ—iron-phlogopite;
Ⅲ—eastonite;Ⅳ—magnesio-biotite;Ⅴ—ferri-biotite;Ⅵ—annite(siderophyllite)
5.1.3 Whole rock geochemical comparison
Both ore-bearing and barren porphyries are shoshonitic,e.g.enrichment in alkalis,high K2O contents with K2O/Na2O ratios from 1.0 to 2.7,enrichment in LILE and LREE(Fig.33),and also show some affinities with the adakite,e.g.high SiO2(>56%)and Al2O3(>15%)contents,high Mg#(0.41~0.60),being depleted in Y(5.1×10-6~16×10-6)and enriched in Sr(612×10-6~1024×10-6)with high Sr/Y ratios(59~180),and lacking Eu anomalies(Fig.33a).However,some geochemical differences exist between ore-bearing and barren porphyries.
Fig.32 Mg/(Mg+FeT)vs.Fe3+/Fe2+diagram for biotite in the Yulong porphyries
Fig.33 Chondrite-normalized REE patterns(a)and primitive mantle-normalized
trace element patterns(b)for the Yulong porphyries
In terms of major elements,orebearing porphyry has relatively higher contents of TiO2and P2O5and lower contents of MgO and Na2O than does barren porphyry(Fig.34).Despite high K2O/Na2O ratios(>1.0),orebearing porphyry has much higher K2O/Na2O ratios(>1.2)than does barren porphyry(Fig.34).In terms of volatiles and trace elements,ore-bearing porphyry contains higher F and Cl(F +Cl >900×10-6)than barren porphyry(F +Cl <800×10-6)(Fig.35).Ore-bearing porphyry has an elevated metallogenic element,Cu(>100×10-6).It also contains high contents of Mo(mean 56×10-6)and W(generally>5×10-6).In contrast,such concentrations are all lower in barren porphyry(Cu<100×10-6,mean of Mo=2.6×10-6,W<5×10-6)(Fig.34).Ore-bearing porphyry also has higher contents of LILE such as Sr and LREE such as Sm,with higher Sm/Yb ratios and lower contents of compatible elements such as Cr compared to barren porphyry(Fig.34).
In spite of geochemical differences mentioned above, ore-bearing and barren porphyries have very similar Sr Nd Pb isotopic compositions.Ore-bearing porphyry has initial87Sr/86Sr ratios of 0.7063 to 0.7070 and εNd(t)values of -2.4 to -2.6.Its206Pb/204Pb,207Pb/204Pb and208Pb/204Pb ratios are 18.71 ~18.82 , 15.65 ~15.67 and 38.87 ~39.00 , respectively.These values for barren porphyry are 0.7065 ~0.7069 ,-2.0 to -3.0 , 18.72 ~18.73 , 15.65 ~15.66 and 38.87~38.93,respectively(Table 16;Fig.36).Similar isotopic compositions suggest a similar source region for ore-bearing and barren porphyries as discussed above.We thus consider that the geochemical differences between ore-bearing and barren porphyries could be attributed to different degrees of partial melting(see below for more discussion).
Fig.34 Plot of SiO2vs.selected major and trace elements and related ratios for the Yulong porphyries
Fig.35 F vs.Cl(a)and SiO2vs.(F+Cl)(b)diagrams for the Yulong porphyries
Fig.3687Sr/86Sr vs.εNddiagram(a)and207Pb/204Pb vs.206Pb/204Pb diagram(b)showing the isotopic signatures for the Yulong porphyries
Pietre Nere,Batu Tara,Roccamonfina,Roman region and Spanish lamproites represent orogenic potassic rocks that were suggested to be derived from an enriched lithospheric mantle associated with subducted slab-derived fluids or melts(Nelson,1992)
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