58 



0. 0. BAKjyHAlx 



saKJUOMaexi bi ceS'fe npoHSBOAHbixi, pa^a AOJioMHTOBbiXT> h ffiejifesHCTbixt nieprejieH, Moryiij,HXT> 

 ASJb BT> pesyjibxaxfe MeTaMop*H3an,iH nopoAy, coAepjKamyto rpanarb napono-ajibMaHAHHOBOH 

 rpynnw. H ripHXOAHTCJi npnoflTb bt, paciex^, qxo npeBpaiu,enic, BbipaataeMoe bi cjifeAywineMi 

 ynpoiu,eiiHOMT> ypaBHeHia : 



6ioxHX'b 



anxO'i'HjiJiHXTj 

 R^SiOg 



KBapUTj 



SiO„ 



; rpaiiaxT> ■ 



KajieB. no.i. iiinaxi 

 KAlSigOg 



BOAa 

 H,0 



n cxojib seaKOMoe KaatAOiwy, kxo saHHMajicfl HscjitAOBanieMij MexaMop<i>HqecKHxx nopoAt, mojkgtti 

 6bixb ynpaBJiaeMO KaKX> ycJiOBiflMH xemnepaxypbi (h AaBjenifl?), xaKij h oxnocHxejbHbiMi kom- 

 qecxBOMi KgO (cm. Bbime) bx hcxoahomt, Maxepiajit ^). 



4x0 Kacaexcfl npncyxcxBia bt, nopoAt eeSojibiuHXTi KOJinqecxB^ xypMaiiiHa, xo ero npo- 

 HcxoffiAenie 6e3'h eaxaatKH mohcho oexflCHnxb nepeKpHcxajiJiB3an,ieH HeSojibiuHX'b KOJioqecxBi 

 ocaAOiHaro xypMajHHa («nrjiaMH»), xapaKxepearo ajih SojibuiHHCXBa rjinnncxbixi ocaAKOBi; 

 npn pa36opt BOSMoatHbixX) peaKuia hmtj MoatHo npeHeSpeqb, KaKi bt> BHAy SoJibraoro BHxep- 

 Bajia ero ycxofiqHBOCxo, laKx. h bi bhay MHHHMajbHoe ero Maccbi^). 



CnpamHBaexcfl, kx leMy npHBCJiT) cxojib noApo6HbiH pasSopx. nponcxomAenia h ycjOBie 

 oSpasoBania onHcaHHoS nopoAbi? Oxb^xt. moh^ho ^opMyinpoeaxb cjiiAywmnMi o6pa30M'b: btj 

 ycjiOBiflXT) o6pa30BaHia nopoAbi sami'jajiocb : 1) iipeofijiaAanie xcMnepaxypHaro BJiinHifl: 

 ocaAOHHaa nopoAa xapaKxepa rjiySoKOBOAHaro wjia noABeprjiacb A'^HCxBiw xeMnepaxypbi fiojiie 

 BbicoKOH, qfeMT> o6biKHOBeHno Ha6jiK)Aaexcn npn KOHxaKXOBOMi MexaMop<i>H3Mt (npn Bbico- 

 KOMT> ace AaBjiemo?); 2) npeoSjiaAajio BjiaHie AaBJieHia: xa ate nopoAa nepeKpHcxajiJiH30- 

 Bajiacb noAx> A'tacxBieMi *aKxopoBi, HMtioiu,nxT>, no npoAyKxaiai cyAfl, mhofo oSmaro ct> koh- 

 xaKX0BbiMT> MexaMop*H3MOMx, 6bixb MoatexTj, oxjiiqaacb oxx) «iiopMajibHaro» noBbiraeHHbiMi 

 AaBjienicM^. Uo cxpyKxypt cyAa, nocjifeAOBaxejibBocxb axHXXi npon,eccoBi uiJia OMeHHo bt, npe- 

 BeAeenoMT. nopaAKt. Ecjih conocxaBHXb MHHepajibi, ciHxaeMbie Bt 3xomt> cjiyqai xapaKicpHbiMH 



1) Cp. Cb Apyroii cTopoHti: H. CBiiTajii.cKifi, Ktj 

 Bonpocy KJiaccH<i>HKauin Kpiicxa.oii'iecKiix'i. caaHi;eB-B. 

 Teoji. BfecTH., 1 (1915), cTp. 20—33, 150—157. Bt. hcxoa- 

 homtj MaTepiajit, Bt 3tomx cjiyiai ex rjiiiHHCTuxT> otjio- 

 HteniaxT., KOJiHHecTBo KgO OTHOCHxejitHO bucoko, ho mo- 

 iKeTb noHHJKaTBca bt. nojibsy Na20 Ha axanaxi) Mexajiop- 

 oHsauiw, cp. 0. BaKJiyH;;^, FopHua nopoAti ITojiflpHaro 

 ypaaa, 1. c, CTp. 84, 98 ii ;ip. 



2) ITpH pasdopi Bbime noM'femeHHiJxt OTHomeHiS bo3- 

 HHKaeTi. Bonpoct, ne jiBJiflioTCH an aHTO<i>n.'iJiii'rb ii poM- 

 fiH'iecKifi niipoKceHT. MMHepajiaiiii BHRapiiipyiomHMii, tii- 

 nii'iHbiMii ;i,jin pasHtixi) oHsiiiecKiix-b iijih XBMH'iecKiix'b 

 yc.iOBiii ofipasoBaHifl; xhmuhcckh poM6HMecKiM aiw<i>ii6ojii., 

 noBH;i,HMOMy, OTJiinaeTCH cnoco6HOCTtio cBasuBaTb 66.nb- 

 uiia KOJiHMecTsa OKiicaoB-b Twna E2O3, Me}Kfl,y T-fesit KaKi. 



<i>n3H'iecKi« ycionia oCpaaoBania npii HopMa.itHoii Tosinc- 

 paxyp'fe paaoCpaHti AJia ciicxeMU MgSiOs bt. xosi-b cMticji. 

 '1X0 MOHOK-inHHaa pasHOCXb niipoKceHa aB.iaexca caMofi 

 ycxoiiHHBon [E. T. Allen, Fr. E. Wright and J. K. Cle- 

 ment, Minerals of the composition MgSiOs, a case of 

 tetramorphisme. Am Journ. Sc. 27 (1906), cxp. 385]; a.ih 

 ii3Bep>KeHHLixi> nopoA^ oxHomeHia aM<i>n6oaa kt. nupo- 

 Kceny pa3o6paHbi Be eke [T.M. P. M., J6(1897), cxp. 327], 

 Bi> xoMT) CMbic.Tfe, 'ixo aMOHoojiTj aB-iacxca cajibiMi) ycxoii- 

 MiiBbisit npii 6o.T£e bucokomTj ^iB.ieHiii; Bbime, na ocho- 

 BaniH cxpyKxypHbis-b oco6eHHOcxeii, npuHaxo, uxo poM6ji- 

 lecKiii aM<i>H6ojnj ne aBaaexca npocxbiMi. BbipasHxe-ieMx. 

 XHMH'iecKaro cocxaaa 4-ro Kjarca «HopMa.ibHbixi. » koh- 

 TaHi^xMexaMop^H'iecKiix'b ^opo;^x. 



