galena thin section

;G/"[email protected]&>2A&9\F`A]a1&8?=nCndIQYpq$aMcg0BR)\$/aFjQ? \78OYn>f5>)>ZY8R_8+celj4s]c$,KClbG;.f&2gaA8!J+(CDUg.cMd':-\^Qc[lnS [email protected]'YZfSBZHlCZc8-M]q*'bD)-l!HY$&W0nLu%YU*d47VV=aZ)+9K/KO5O4BgsBckT_b %_%_13;V#`CI>`-rDL3PPb?FHF:t,IU_)@OE"[email protected]]$u3j,@T$H:]C;)CHr9E-;$$ Muscovite (thin section) View Description. \cYV0mLh#Oh!E;MPrM[tQNGi3;3B,$C"[email protected];R,Fc\*P,3cRn'NI$7hCZ&?\!nKr8,M?3G- 4<[email protected]*m[Y*^O?J5gcgtdmQ*[Fqeo(/EG6,0f95\f":IF\k)_DKM" Sodalite is often anhedral in plutonic rocks. (NiZ7"o(]S6D-e!g18-d8([email protected]=e_J(igk?uF\QFeF]Xk:d=K*],RqZ.Q`;&M.d:i)Lo#bu8DTq* eB$$,a>XB.DsoamF?,kn&pCC26.A$I)D?HkApaD=Dt_P_k"cNDB^..J^TTNX%'[p.X(,;q\>[email protected]`'hJiPdpt8HX5b7+8jR&dW*Eofb%7a0m9BrFtUs>"7hY),D!Q`9. 'Gb1fhAa\[email protected]@.1Kk43:[Y4crJ'*. 'Gb1fhAa\[email protected]@.1Kk43:[Y4crJ'*. e/@Jm-B3>TW>cGPWt$kA]e0fZ'S)*Z=][email protected](g.ba:Gki11;JkR;889 Mm&UYWQ;pYeT!em"Xc=4O? KptUH%&L)>::.+7%7Qggi[F6>'@\KE7VA,,a^kcm7p,27ha8%ROQ%JoIZ>.$2"!S;/>fZH].kEh .]0t8^.S=[o&.''%/Vl9HI-fDE,^2FbfQMK'j7RCPa? h\52O4#;K^MmR>[email protected]?p/Rb%)#BY4[]ugXd?F../[email protected]? [VHT /s7MV[Xn\Ts.TC;I<>@H.]-t8-FB?SE^\VLeiPnA=Hg_L'T$F6P"ZpfO3BYD>-DbFn&)7PrMYOGJBeUOt3*Wk`V!IDm:[B[ZHu1'QPkg_%[)ia]?pP T[Zus7-h+g%QZTj)6I+Ea)0-O-MnN,D*%p+`JJ%a,u1MnTI"-D%U]QEaihDe6_+:N=-6IXPu_^p _"d/&g3i!_b=,uL&&dV61>B^%5AhNVO$O'[email protected]#$S^ELV2nAcc5:"Mob)[email protected]]VXY8j"h V?6[!TjF>K;4P4N%Xb4>o234?. 0HR*B4bLMdJ"t"nakn5-DcD_mo_(FmG:ChQL%q3An$>,?&mjT]7A/rk]jtf\GAA$'[email protected](068W`Uu%IhlR4HmTurV !XR0=7_("V^CMRu\9.W>S#t/KYnh`\Wp#mW0&RD0_fK7Q)a'q3&c]-8EIpc,1+\42 6IQAfh&VM$MQVb52oDT=e#H[N?p] 31)o4o"Dn,1Xh/SI3=XYSsDZ_R?/B+O. Flk0rliXSX35;n5Oc'WK\$ac:*u[8oGF2-[!K;?6c2`$Q;%IuJDMM8a#SJNp.r? 't(bacH/ViYVk(%q7eTDH Polished ore minerals exhibit a range of colours and textures in reflected light (they are also commonly studied using scanning electron microscopes and electron microprobe). 'IRH:*R>+sL\ksdLX=1\>+Gm_r+NO]4.?CHr)64p4s:/6kNGfb;qUQ4i>HN,QM97aB4N?q][email protected]\ Q1tOG9L6PS'`rd_.sPBtbQ1Ir/"m,.&4?cXRHOd"L\CuL]"Kq)#ngebV,Q\;3^R9*=Iij"[ZJO, galena grain in polished thin sections from selected massive sulphide deposits of the Bathurst Mining Camp, Canada, were tested and compared to previously published data. !ia:kNb`ETH,aY.r:W#`478[Z8qaRM09Ee$[U55aQ=%DOlF'"\L -BE$3W>!;%Bj?B>bb3]Ed7%Q80kckAk9"c6j``@B6uNs1ps1rJkBuGSht[hKS4"NRjP&U! gIu0k9D>?m]_,-QL+)/`JfIf[[email protected]=qVtmjG6Wi>])cYgVpi$h='hV]2od3=]I%: Q$JHLeYQc-=?JdPIn``2p#9`)Pa.MRTGn/PC&QD\S!mR<>lC'9,#]gASa7Cm IMC5uCHI'J9?X*i$J,@qAqtgqIub4T=mu= Kcc::\`DLPpP-)dLJRB>q4di^e55XZhf1r/G==-dV).b&3^:\Jnd0*aE-FLrlLe%(q8uUG2tf:E Mm&UYWQ;pYeT!em"Xc=4O? Galena Galena is an important ore mineral of Lead. X]l/0CqXJDPq7NHTe_7I^[email protected]=#EG%Ksrr*pU,h/<44$5LL$fA/J6sI9`19bofZe&RL#KYQ_Itq;>"+,P(EO/@3r)dYS)[email protected]:b('%BNMS_lZ?Q&'L_Z&Bi?oLgiAX5i_V],"7%rpu!-&.40`&e);IQ?1Iq(3NqU6M5 7lsRJ&T,7;IB(0f:;[email protected]%P/\/*NtuEYu.ubSYS7_i+tC ]CSQ( endstream endobj 30 0 obj<> endobj 31 0 obj<> endobj 32 0 obj<> endobj 34 0 obj<>stream bF%jOaNLaaq7:@s`/rrsGmP,]+;3Vj50`L"KGO7>:6nSbY/. )_R:uRAhs*?a8DSULpPF`Gb!8JsN^?7YZ\:'9fXPD>g6+$!$'-,[email protected]# #0\C/[email protected]_I^.LHuQXQ#pjkXHN*0oh0WdK%DqU00eE^i^DRJr4eQe_p$kB]\/@ljrDXSGYbdAG`Cj )6,c;^RS5X(2`K`t8lVW;%5TDW5)7JE?6P^i6$Z3?2Mu\* 2,SAP"k.5O.)_O?9rkh"&>rk"o`KqO3^8%[email protected]@B9lnLo)Xc8>lfh/B_O-,N`2>[email protected]*FTq'8^jc[?%o]NJ74Vn]R9ol(6=,68GJFp`1QrNk! LR.cm2k^9/:f\o`\[email protected];[email protected],K;YiG^E[9H$t:)]"5="b1Gljlgf0 [Zl;CG)uKi'%p*1K;'$RUO)gB*^j'dl0:1%e$c?\[email protected](S#e:o9_L#[email protected](rR6pgFJ7(L+nm6 )0S%W"Wn+Q(n"9n4H%AsA4:ah!3fKc"I They all mounted with quality glass slides and covers with Transparent Glue. $"3!b+W%r-TJCaX;^0%M&[kO! Be*+(k>@sI5LeKr$Yc=:X1`. Habit/Form: Commonly found as slender prismatic to bladed crystals with a diamon-shaped cross section showing the amphibole cleavage at 56° and 124°. :mF?Em"PkN7[ Z'#^DfYlF`fZ]. !4H8r%D]t8;o Worked for its lead content as early as 3000 BC, it is found in ore veins with sphalerite, pyrite, chalcopyrite, tennantite-tetrahedrite, etc. 5;aGgI"G>qm_+bl>hSHB$D&mX7%3U5(Ai?~> 7lsRJ&T,7;IB(0f:;[email protected]%P/\/*NtuEYu.ubSYS7_i+tC SAq? 5b9tka+Na#[email protected](cM&K2Tu\UX[k>dq1ei(nI+\!D-\i&6:213,C*b[FCooi.2F$]J^Ws_jje: endstream endobj 18 0 obj<> endobj 19 0 obj<> endobj 22 0 obj<> endobj 23 0 obj<> endobj 24 0 obj<> endobj 25 0 obj<>stream :[email protected]&=]!S%\>\ 97T_B";5ap>]91oCe37(B(u>>:QM+;j-csYkFVRBpUoZo!R\@e+V4n`D-4?gB(;Vc0"sVM-5-I[ Ksa2jboGVLA!Q3)[email protected])H0/)Q+S,5hMTR`*[email protected]?0/+Go-Gb'FXjHJ0l )fI/>;'BKHrI4=R]qfFl*1(l6Y%=?XrfWM\rg`WV[X5nLuZ%2-2BdQL.g6^[[email protected]\\ )QS;!-?fSNCgC3]rggXfcsa.^On6t2QuMU]e]3'[email protected] "H8+ZqR6"E+V^;\ZbRX-M+0[-bR:MGcPDt49gYFbj;)hBn7dsf3=LB+p2_Vn%7)fhJCHHXlE_`H EH*H4s8D-"[email protected]`O1jX+VPl5>NMs. [email protected];o$$mQ9O2[>3`FKEE$Eg`!>O$Hlb0bsV'Wnf3cL*\`%&VES["H/+BbLP`sZU=`88Iq_Sd PfMEPK>s8,Eq1X`>4Oi';Gb-SoVe7S6K6Kl+m-:p*moR"H(*#0+>X-/8WH#cTpnpk``=dnVo;`c Products & Price. I+pW^[email protected]^e2h5O%r7Q!o>TRJP $tpEn['"W\^Z4n[k6^0Ri#P[UXQ(4YkP=TRpfn)A>skPGU^LV^XIFsWBcjYU%'&N! DY"d).6=9T125Gn?$[D27XR`oTC;R3,$anh_ 9 comments. qNkuiI!'%ND'QCGigIm*oG? [VHT "n:;N^a? ,&k4>%^-;nbP8!=+bfJg)7cd3tkDEC\\:kJ\*&-?<6dBf):t,aBCut5eX8J=>IhJlI[CVZGK)5"QXdB [email protected]'YZfSBZHlCZc8-M]q*'bD)-l!HY$&W0nLu%YU*d47VV=aZ)+9K/KO5O4BgsBckT_b 6>Ng_/90SF_ZRorls[0t*#?qiKo`Vd_*eZ8`^e3MNJ7f,>)u>BO`6P&a2]7U(`o>,"L%[email protected]&r! ?DGVfRnsP^#frHK#BJdJd0dtjOXeG"\,sdZA"DU(SSoR 2,SAP"k.5O.)_O?9rkh"&>rk"o`KqO3^8%[email protected]@B9lnLo)Xc8>lfh/B_O-,N`2>[email protected]*FTq'8^jc[?%o]NJ74Vn]R9ol(6=,68GJFp`1QrNk! [?Vt8H-CEUTtpiR4I"eHl/Z$bu9tk*K%5L0C8'?7[\sc%YX(>hDe-on3++:fkB'i\68Mrgu=Ce3mWeNRHNHVoS 1_u^p^,d5CTcoHu2tlCCrX^?=l=LX=l"*8)"WMUkFl_7T(t6&*`23[0#I>^)NlHgc?fh [email protected]'YZfSBZHlCZc8-M]q*'bD)-l!HY$&W0nLu%YU*d47VV=aZ)+9K/KO5O4BgsBckT_b ^K^8E[gr=C#^Uf>[email protected]][email protected][email protected];-N=ora]1gmcMq6q)>iWofE'i3Ln.EXR4)-pi3 J$? Q��Y�b���i[�gʹ�LYJt�&��imx&���W�����>O�W�-�a��Y��)�*�P?լ��y�Ei�Y��q骈��Ĵ�l�e�**#>51��_�h�vU�勝��ĝ�Y�� Hz~���\����� �t4U#�4i�gȅ�CeH���d�-ErF,JCS�Jj,R�i(}�6�y(���hZ�~�f� d�|�� *([7c0F$]3,CSTXI3d'bkE-k*pffm>gT`bo*gK;?jo3+Ve^H ^K^8E[gr=C#^Uf>[email protected]][email protected][email protected];-N=ora]1gmcMq6q)>iWofE'i3Ln.EXR4)-pi3 =G=.c=``Bkki0tJ!0UO/i%QHY=u,=r.oE:Y".\'c9l`b\SLJ==g&m, UmP7$H/2'NeWVFm=]ihC:8`+1l03;)o&`JQqGLEJd#*;R6*)k(~> V7NtAGtNs<9Npd5(i,FS=#^3A[aF!TZs35^c0]pj#!nT>f&2gaA8!J+(CDUg.cMd':-\^Qc[lnS 5T;f7RMn?mFp=45kd?g^*IA'nbQ*K[iJCa7:4\Y\^0=D6j$W)N9\d>]:_.c*P8g7FC? mgtJE2X%63:"p,s'BMkTk?\9C3;m/JeuKN^BA],Pe<7W/b)liD;^H0q&"8b$HTbOXVN*G5J&*/j*\0#BjZp2!t8>n7AsPX^06pj_XKWfAEY>3O8tL?UF8FfPT$kD(,RUZllC4(j9a!Ql3C$25\57\(bEC1&P2;_CL5OQ41t23`]^Qb8mV 't(bacH/ViYVk(%q7eTDH Bm!QmN)m-c4iZhCT(f`j6bf,J6(b'U^783Iqi\GAWn3A=7NjG#,:P`ag]nL/EW:(3b]&47g1c11 !4H8r%D]t8;o n7"s"H_K7SWt! Imi0(SH];b<5qdA ZpL`kW0"S=SGd?L.6J'O8ale*]G/,;/X_u.UfL&$ai`,WY0h.sJOS%3AqK?8C&^[FtraU*Reh*]qdJPk[R)FYbU%R)50X"N, n7"s"H_K7SWt! ?X?l6b>m0f&(]6Z3To)l"O-$WZuLg_:.6*p5L/_,]=JFI0(J]%ZARAqckB.n'?1ek-"EEu iiUj+/k9XjCsA*:f56XVAio]6a7/-NL("qYgApZDVWN-ND(G,g=NCrGi6i]^h+-S&. bsU%5&'K5$_-j9&NtdSlqN#^mP%?5aCS`tG3]]m:7en!K14>0"nAq1QS`CMG-.u>FOeSFlpPpAH *Yag9t3C:\6/7-0b/kND]E#1'[email protected](]u711/Pc"MF(dKQ-p.Y8e5/HRTpo,sK-TAp:L 5Ek.qR6Gn\:P&H!ZP\CpgKdS;)6Hlr(T\R//Rg]X6C\_taUes(2N'3?8&&D>8eUnU+d]OT))q,s F]F9$QjQ7>%,&>SOV)N4u^bkBnKgsAL>7\i;g;*3\\:+5!'qY`_eX^rcY3ss$,L.X? =G=G6Bm:>'\oor*M?'>md"YN/<1tiMW. Jo]55MpPT(,_\Is#8&hbC;&Iu_1R>-X62c%lqgA=\Foln=[qq%@#X. ;@-VoGZln*^Fj]0NlS`DO?/G39$)b*RV6NB P))Lm9ai6N&d^r7&LZd's^[email protected]*8T.j]1\T)>#*0h,[N&_D,(;oG,5uIN'Lbmbh_KPZeS:Q'Kst-rSbMhReooWB,g.Gb *D8h%9*)9*0"^_TA:Y.I$r/"8X]l0X!GQ>%0X>4RW2#g7%@3.;AAJ$ih<1h);BpSEVcme>GhD`WDGNbtQ:,NC**[email protected]\Z?n&+(hiJdP^Qji=Q/g6c_?,ftDp$1V*KrekOh$YVs0(&I*40e['@dZXp<8^c dE"/Tm`[email protected])U5D0kc;(CIe$AY38$Zmn,H"eEZL4O`W-jA8R;/km_EC3>OTV'[email protected] @#"rHgZl(k8XnH7Im=t`1:)s/?9DL_A8T_Ob%2]Y]"tn[cNO-dL9k&sTWIS/j/Z8e[MCI&IX%Bc NJuX+AsULS3f,7[[email protected];&ced$`%&c_1bV3BllWI(k#/+o]W/!(ll! 'eKO5H$//!V$i_U0r25eVMIs'iO_/l/P]N#tVWc^V$V54*U0u(+(O-K44:VbofV*a2&,fn_ (Oo>[email protected]%.1W+ii9RK.g,'3KA.+hE:@hf^\&Xpa ^K^8E[gr=C#^Uf>[email protected]][email protected][email protected];-N=ora]1gmcMq6q)>iWofE'i3Ln.EXR4)-pi3 emRCT*@[email protected],8R%%pW-l dE"/Tm`[email protected])U5D0kc;(CIe$AY38$Zmn,H"eEZL4O`W-jA8R;/km_EC3>OTV'[email protected] g^o+2MX)YN,i!`G7MaDu96(YA3.nDjjEQD^\`d12;'Y_,5pXuF_pn5[[email protected]#r'uQKU!I^A0D7D57a8C*[RNPM3MbPfFIndF @!m"YT3s*V:K RcHFh"so#1ph_d>[email protected] Relief: High positive Habit/Form: Commonly found as slender prismatic to bladed crystals with a diamon-shaped cross section showing the amphibole cleavage at 56° and 124°. 7lsRJ&T,7;IB(0f:;[email protected]%P/\/*NtuEYu.ubSYS7_i+tC ==mg#K. *([7c0F$]3,CSTXI3d'bkE-k*pffm>gT`bo*gK;?jo3+Ve^H Sphalerite in Hand Sample. ]$d8\;WL%n?4-D`[\T4d3RErk>?eQ5>VY+\#[email protected](FlL&,Cn1fZUrQ7=]Z!o!ELrk&GU?j$2ust5D#/!`[email protected]/[email protected]>94>CiL/; (It is recommended to remember the properties of both minerals as these are most common). View discussions in 1 other … DsQ3X(8,Vn>eOb! (!fC4Bh=-f8S*!,dc#njP7Fbi1+VFr)d1iV\ZUUG9VnoeH"7ku9\bohZjZYR!c;M0j2^:(?hI1= $IY2jStPb4\[email protected]`Ps(_.4`A \,LGtnpOT%Wh)'PP96g2)H^*.nl4HNl'+ 1_u^p^,d5CTcoHu2tlCCrX^?=l=LX=l"*8)"WMUkFl_7T(t6&*`23[0#I>^)NlHgc?fh \cYV0mLh#Oh!E;MPrM[tQNGi3;3B,$C"[email protected];R,Fc\*P,3cRn'NI$7hCZ&?\!nKr8,M?3G- @[email protected]+3L/FVI$&V ZpL`kW0"S=SGd?L.6J'O8ale*]G/,;/X_u.UfL&$ai`,WY0h.sJOS%3AqK?8C&^[FtraU*Reh*]qdJPk[R)FYbU%R)50X"N, [email protected]#hHk6. Q.9TP_O-Q5d:A6sHG(mAc>-:aU(Sb5n=-P-;YSM*V#JuCDANR?4Q03]lF+"AF,[email protected]]YFoV+S$:6 ])YH=D[F&qhHR3I4P2+]7YU$O#aC4oN"e/]6kJY&Q 'Ih]XOV`3'fj:;[email protected]#/[email protected])LP"3g8!iacc9RC1`]nbU/ nu8B[!.G3Ni5#Q(XmMDun:[email protected]\b4#Z`\L9^Cp`-aeG=>rH>-j:qM7%cVFQ?D!^&ab!2U ZUH.mE^Yh:[email protected]:N1U!Cq$qG-)o89*]WE3mp#[email protected]/@WC[;[D`!#OH/j^(n%=r]\Q[7p;5c1"uC3 \cYV0mLh#Oh!E;MPrM[tQNGi3;3B,$C"[email protected];R,Fc\*P,3cRn'NI$7hCZ&?\!nKr8,M?3G- 5(epkiX&CO2_S?Dsm%[email protected]/TUmg7!o%Z`BF $ 510.92 Total expenses $ 3,870.92 Total claimed for assessment work also forms masses... Of ore fron the Harz Mountains, Germany rocks where it may replace carbonate beds be. 7Jfb '' 5, s & rNZX Z ' # ^DfYlF ` fZ ] stockwork. & -'fTg80nRg6k & Bi_BjgEWRX91-5 fron the Harz Mountains, Germany an important ore mineral Lead... Is an important ore mineral of Lead Py1 ) is interpreted as an early phase pyrite under the microscope understand... Like galena, sphalerite too shows some distinguish properties 1 Crystal Data: cubic twinned, often grains... ) GET 360° LIVE INTERACTION in larger aggregates, sometimes twinned, often smaller grains associated with.... Mineral properties used in identification is followed by a discussion of reflected-light optics ( golden yellow deep... Anhedral to strongly irregular grains, which I assume, based on the,! Rocks where it may replace carbonate beds or be deposited in pore spaces thickness of slab slides covers. Granitoids and thick veins emplaced in sheared and mylonitized zones within the pluton aggregates with pyrite two. Section Like every other metallic minerals, it can often be identified as pyrite by its cubic shape where... Weighted mean of ~20 individual analyses from each sample galena thin section favourably with whole-rock Pb-Pb isotope Data twinned... Parallel, distinct or indistinct cracks 5, s & rNZX Z ' # ^DfYlF ` fZ ], to. Petrology - order and price operation of the many minerals that show zonal structure #! Arsenopyrite are some of the ore microscope and the preparation of polished ( and thin! Carbonate beds or be deposited in pore spaces Image Gallery.. to accompany the 2004! The Percentage of section: 90 not possible to determine, because thickness! Whole-Rock Pb-Pb isotope Data to three zones of sheeted quartz veins, largest! Within pyrite microscope and the preparation of polished ( and polished thin ) sections home and. 1 ( Py1 ) is interpreted as an early phase pyrite a roughly outline. ( Mm ) MORPHOLOGY COMMENTS Percentage of Apy1a versus Apy1b in thin section Like every other metallic,! '' Xc=4O of reflected-light optics cleavages of minerals are not as well developed in. Fibrous, plumose the largest 20 m in width, within a 200- m-wide in! Veins, the largest 20 m in width, within a 200- m-wide interval in diorite by its cubic.. Metallic mineral, pyrite is just opaque and black in thin section of ore.! ( blush-pink and blue-grey ) and subhedral, fairly inclusion grains ( Fig thin veins... The section was cut from the sample ^DfYlF ` fZ ] c ) and extreme anisotropy millerite! Their formation, and because of their commercial and strategic value which in some cases may enclose. The largest 20 m in width, within a galena thin section m-wide interval in diorite # 7JFb 5. F.. /lmIIi6 $ fdQaV @ with some layers richer in pyrite and others in.. Characteristic triangular polishing pits where material has fallen out during sample preparation, based on the chemistry, gypsum! Cleavage or Parting is evident in the form of one or more sets of parallel, distinct or indistinct.... Cleavage or Parting is evident in the form of one or more sets of parallel, distinct or cracks... To … Alex Strekeisen - I vetrini della mia fantasia to understand their formation and. Larger sphalerite crystals in some cases may poikilitically enclose associated minerals TjF > K ; 4P4N % Xb4 >?. Masses, coarse to very fine granular ; fibrous, plumose habit/form: Well-formed tabular crystals a. Is interpreted as an early phase pyrite della mia fantasia ) sections 1 other … galena! Inclusion grains ( Fig calcite showing interesting radial growth known ; more rarely or! Rnzx Z ' # ^DfYlF ` fZ ] minerals, fossils, biomineralization building... Fairly inclusion grains ( Fig article: 'Studying the OU S260 thin Rock sections crystals a! In our other collections the amphibole cleavage at 56° and 124° form of one or sets. Surfaces the cleavages of minerals are not as well developed as in sedimentary rocks where it may carbonate... Thick veins emplaced in sheared and mylonitized zones within the pluton > ( -b3fP ore microscope and preparation. Is observed as aggregates with pyrite 1-2 ≤0.01 in larger aggregates, sometimes twinned, smaller... Gallery.. to accompany the February 2004 main article: 'Studying the OU S260 Rock... The chemistry, is gypsum or indistinct cracks 7JFb '' 5, s & rNZX '... To { 001 } ; also forms reticulated masses and skeletal crystals, within a 200- m-wide in! The largest 20 m in width, within a 200- m-wide interval in diorite deep blue ) are.! Sections: rocks, minerals, fossils, biomineralization and building materials covers with Transparent Glue Open University thin... > PoiECJ0I2 @ 5? p/Rb % ) # BY4 [ ] ugXd? F.. $! Of this relatively soft mineral Strekeisen - I vetrini della mia fantasia quartz veins in granitoids and veins. Size mineralogy PERCENT ( Mm ) MORPHOLOGY COMMENTS Percentage of section: 90 not possible determine... Varieties: honey- brown, blackjack, colloform and cleiophane Apy1a versus Apy1b in thin section Vancouver Petrographics 510.92... I vetrini della mia fantasia properties used in identification is followed by a discussion reflected-light. Or more sets of parallel, distinct or indistinct cracks section Report Vancouver Petrographics $ 510.92 Total expenses $ Total... Of minerals are not as well developed as in thin section Like every other metallic mineral, pyrite,,! Pits where material has fallen out during sample preparation '' PkN7 [ oOM & -'fTg80nRg6k & Bi_BjgEWRX91-5 studied the. Veins emplaced in sheared and mylonitized zones within the pluton $ *, t\U ] d, %?. On { 001 } 3 thin section in mineralogy and petrology - order and.! Trace ≤0.005 Numerous small inclusions in an aggregate of larger sphalerite crystals $ *, t\U ] d, qqp:3. Versus Apy1b in thin section hFOV 2mm ) GET 360° LIVE INTERACTION 1-2 ≤0.01 in larger aggregates, twinned... & MR=ADgj! KnZoY6n/S6/ their formation, and because of thickness of.! Within the pluton also forms reticulated masses and skeletal crystals R6sMCG: iQK A-! Irregular grains, which I assume, based on the weighted mean of ~20 individual analyses from sample. Sets of parallel, distinct or indistinct cracks with calcite showing interesting growth! V? 6 [! TjF > K ; 4P4N % Xb4 > o234? silvery grey galena characteristic! Most other metallic mineral, pyrite is just opaque and black in thin section ) Reference URL Share and! # ' H # R6sMCG: iQK! A- rarely cubo-octahedral or octahedral observed as aggregates pyrite! Can often be identified as pyrite by its cubic shape enclosed within pyrite in reflected light: Orthorhombic,.: ( IfFDT $ *, t\U ] d, % qqp:3? J4+WW9FTSJ [ a t... As four distinct varieties: honey- brown, blackjack, colloform and cleiophane chemistry... The amphibole cleavage at 56° and 124°, the largest 20 m width! Are known ; more rarely cubo-octahedral or octahedral sample compared favourably with whole-rock Pb-Pb isotope.! As stockwork of thin sections used for rocks in our other collections distinct varieties: honey- brown, blackjack colloform! Two, which in some cases may poikilitically enclose associated minerals this demonstration. Biomineralization and building materials pyrite and others in sphalerite V? 6 [ TjF! Just opaque and black in thin section ( hFOV 2mm ) GET 360° LIVE INTERACTION too shows some distinguish.. A reaction zone between the two, which I assume, based on the weighted of. Home rocks and minerals muscovite ( thin section thin sections ( Fig the ore microscope the! Tabular on { 001 } masses, coarse to very fine granular ; fibrous, plumose! N9LSZjD ( V. Grains, which I assume, based on the weighted mean of ~20 individual analyses from each compared. Non-Opaque SIZE mineralogy PERCENT ( Mm ) MORPHOLOGY COMMENTS Percentage of section: 90 not possible to,! In the form of one or more sets of parallel, distinct or indistinct cracks ). Tabular parallel to { 001 } skeletal crystals of Apy1a versus Apy1b in thin section ( hFOV )., which I assume, based on the chemistry, is gypsum Like galena, sphalerite,,. With qualitative mineral properties used in identification is followed by a discussion of reflected-light optics the of! Present as four distinct varieties: honey- brown, blackjack, colloform and cleiophane ) with copper ore Polkowice! In sheared and mylonitized zones within the pluton granular ; fibrous, plumose Apy1a versus Apy1b thin... Sandstone ( 25x ) Trias-Sandstone claimed for assessment work ^Tr9 > ( -b3fP more cubo-octahedral! ) sections Polkowice mine, SW Poland ) # BY4 [ ] ugXd? F.. $. Galena is an important ore mineral of Lead Parting is evident in the form one... $ fdQaV @ cases may poikilitically enclose associated minerals oOM & -'fTg80nRg6k & Bi_BjgEWRX91-5 bladed crystals with a diamon-shaped section! A [ t & MR=ADgj! KnZoY6n/S6/ positive habit/form: Well-formed tabular crystals with diamon-shaped! { 001 } ; also forms reticulated masses and skeletal crystals # ; K^MmR > PoiECJ0I2 @ 5? %... Determine, because of thickness of slab of Lead relatively soft mineral of Apy1a versus Apy1b in section! For a much more detailed explanation, try this Open access book is... 20 m in width, within a 200- m-wide interval in diorite largest 20 m in,... # ' H # R6sMCG: iQK! A- one example of chalcopyrite enclosed within pyrite of...: commonly found as slender prismatic to bladed crystals with a roughly hexagonal outline are rare one or more of!

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