مجله بلور شناسی و کانی شناسی ایران
سال دوم شماره 2 (پیاپی 6، پاییز 1373)

Inc Sm(1)(TIIFh reacts with mcthylllthlUm In TIIF In the prese nce of lclram c lhyt c lhy lcn c d lamln e, TMEDA , 10 gIve 1[1 .J(l ·MI :I)A)h[Sm«(chr('39')I I)61}. Jchr('39')IIF. Tl1c complex has been ch;lractcnzcd hy elemenl al analyses, lit spectrum and magnetic mcasurem ent . Molecular .lOd clymsl .SruClUrc of thl! complcx hoo been determmed by a sIngle cryst .. ! X - ray diffractIOn . The crystalS arc trigonal WIth a = 16.6X4( IO)A , c = 24.946( IO)A , sp<lec group R3c, and SIX molecuies/ulll! cell. The final It v,.Ilue is 0.043 for 2.140 reneclions measured.

qua ntit at ive anal ys is o f e leme nt s by X- ray .s pectroscopy has many appli ca tio ns. In o rd e r to meas ure a relative amount of an element in a material it is necessary to use standard samples. However, using too many s tand ard samples with different pe rcent of elements needs a lo ng processing time and calculations. X-rays with definite enerJlics are incidenl to the sample, penet rate to a ce rtain depth, and exc it e alomes to emit X-ray fl uorescence. The emitted X-ray passes through the sample and reaches the detector. In this work we have ca lculated exactly the fluorescent intensity th roughout its passage in the sample.

A propionamidc oxalic acid complex was prepared flOm propionamidc and oxalic aCid . It was a bright and hygroscopic compound with vcry low hardness and was accompanied with deformation in air at room temperature. lis X - ray powder diffraction data were collected by a computer diffractometer and was analyLCd by profile analysis tcchniqucs. The compound was crystallized in triclinic system with space group P T. Lallioo pammetcr:i were 35 follows:a = 6.334(4)A b = IO.486(6)A < = 7.225(4) A a = 85.55(3)chr('39') fJ = 82.20(1)" ,Y = 80.03(2)" V = 466.6(5)A D, = 1.16 g<m - I

All of Ce(IV)-pIO compounds can be used as ion exchangc. The solubility of these compounds in inorga nic acids arc vcry low and they can not be formed anionic complexes and can give amorph and crystalize phases under different conditions in which the phosphate gro ups WdS substituted with sulphate groups. The crystal and amorph form of inorga nic polymers of Ce(IV)-P can be prepare from the react ion of orttophos phoric add in the prescnc of Ce(IV)-SYO in H2S04 at 8O-100°C with stirring about 4h. The crystal form of Cc(IY) - P have fibrious strm:turc and ycry simi lar with ceieiuse paper. The X,RD elemental analysis, lR and FTIR and microscopic pictures of polymer under diffrent condition of preparations. and onc of its use as chromatographic separation of inorganic cations was also studied.

The grecn basic ; va lcnt·c KCr1(SQ,j)z(OH)(, i, a hydra ted chromium ,ul fatc which b ~t rucllLra ll y chr('39')imilar to jaro~i t c. This cumpound wa~ flr~ t ~ynth c.~il.ed hy MJt~c h c rli ch ( 1 ~61 / 1240) ill . howevcr , ils X-ra) s tudJ e~ were unllc rlakcn by thc author. In th is stully. the cuhcdral cry)lta ls of KCr1(S04h(OH)" werc ~}chr('39')n lh c.,il.cll anll eX:.JInin cli hy o~cillatl ry crystal and Wc i~~c nh e rg methods, and the fnllowing rc~ult~ wae ob wined:c,,= 17. I 17 A, "0= hn= 7. 12S A . (.! _ chr('39'))()" • Y _ 12()O ami c, lu,,= 2.J 71. Thc Pri ncipal X- ray powder diffraclion data an.: a~ follows:5.058(48) ,3.07Y(53) ,3.052( 100) , 2$55(3.3) .2.2XI (5Y)A.

The Sangan Iron orc deposit is locatCd 2~R km chr('39')IIUl1 caSI of Ma ~ hhad . The magnetilc ore hotly is 4.2km long and : to Jt)(J meter witle. The mlnerahl.allon is hos lcd hy carhonate of upper Juras!chr('39')>ic-iowcr Crctat:cClu .... Magncllte and a:-.suciaH;d mlnera" MC analYl.ctl hy elcctron mlcrochr('39')cope. The Ti. Mn. Ni, Cr. P and Mg cnnlcnt of magnetitc arc very lnw. The MgO con tent of magnctJlc in Dartlway, Baghian :md C- north i:-. hctwcen 1 to .!chr('39')I pcrcent. Parage n c~j!; of magnclilc III A tlcpu:-.it Me .1Otlrllditc, hcdcnhcrgi lc , ca ld le , and a rare amphibole such a .... Icrru - paragasitic hornhlcndc. in the A, Band C t1eposit:-. arc rcrro - acl innlitc, calcilc ami Fe-rich chlorite such as ripitlolite, in Dartlway dcpnsil :HC phlogopile, siderite and garnet and for 8aghain deposit arc dolomite, phlogopite and cinchlorc. Thc ICmperaturc of fo rmation of A deposit wa:. higher than 400 ha,cd on Ihc m;ncr:t1ugy and Ihc inlrUSI;vc rock!chr('39')>. The temperature of formation of B deposit were calculated JO() ba<;ed on the composition o f chlori te. The Fe-rich magmatic fluid a~ociated with the quartz monzonite (ou tcrop at Achr('39') ) was reacted with the dolomitic limcsHmc and formed the magnclitc ska rn. Ch lorine rich amphibole may i ndica te that iron were carried as chlorine compicxC1> In the fluid.

In 1 his experiment for SI udyi ng and co mparing of clay m i nera Il. in t he sol is uf river terraces, fou r profi les se lec teu and ),:unpICtl a, reprc.chr('39')>enlcd profiles for mineralogical analysis. Three profile..; were on th ree terraces of Zayanuehrood river in Pole - ShllhrCSlan Ihal caen of them has different ages, and the forth is loca ted un the o ld rive r alluvial pla in and is o lde r th an three terraces. So il samples were prepared according to the proposed method Ichr('39')ly Killric and Hope. X - ray technique was used 10 determine Ihe minerals present in the rine and coarse clay fr the pre),cm:e of Ollart:r, Kll nlin i tc, IlI i1t~, r hl ori rc ;end :1 l ill ie. POlygorskitc in all soils. In the soil of hi gher terrace there is Smel.:ti lc and in the old plainchr('39')s so ils the Smectit e and Pnlygorskitc arc dominant. This co nfirms the idea that Smeclite procc.~s.