On Some Sulphosalt Minerals (Tetrahedrite and Tennantite) from Northern Japan

Home , Tennantite

Title On Some Sulphosalt Minerals (Tetrahedrite and Tennantite) from Northern Japan

Author(s) Harada, Zyunpéi; Kitahama, Masaharu

Citation Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy, 8(2), 74-81

Issue Date 1952-03

Doc URL http://hdl.handle.net/2115/35853

Type bulletin (article)

File Information 8(2)_74-81.pdf

Instructions for use

Hokkaido University Collection of Scholarly and Academic Papers : HUSCAP ON SOME SWLgeffOSMer MXNERAkS (rrrffTRAewM>RXrscE ANjCP [scENNANTXTE) waOM NeX[ErswXN YAPAN.

Zytmpbi :EIiARADA altd IN([asaEtharei KXTAHAMA

Contvibution /from the Department of Geology [-md Mi/aeralogy, Faeulty oie Seienee, Ii[ol

I)uring the eourse of stuclies on h'regularlt{es of erystals, the pz'esent writ･ers eolleeted a series of eoppey sulphosalt minerais. The purpose o£ t･his paper ls to pi`esent t･he yesults of erystallo- gra,ph{e, eherni-.eal anCl X-ray examinations on the speeh[nens of tetra- heclrite cand tennaiitite-eopper sulphosak minera!.

i. X.ocaiities afidi lnoiSes of occurrences

R. rffetrttkedirite.

[l]etrahedriige is wiC{e-sp.z'eaCl in its oecurrence and va℃ied in it･s assoeiation. It is eommonly founcl ii} copper deposit･s as a primary eon- sti't･uent in assoeiation with chalcopyrite, sphalerite, ga}ena, ete. Ie frequently beeomes an importane ore mineyal of a peeuliay metasomatic eoppey (le'posit--･"Kuroin.ono"--in northern Japaik, [l]he followillg are loeations of tetrahe(lrite, whieh x?irere eolleeteCl by the wriLuers in ChaLv dis£riet: i Kamik.ita mine, Kamilquartz ve.in. iii Da,t6 mine, Usu County, Ihuyi Provinee, Holckaido. It oecurs in quartz eoppev pyrite hnpregnation C{eposit with soine te}lvvfiv.in inineyals.

5ou{=lll'SIAtJJ's-e'Ii'll6k'k"al'Ii6"U'I{l'xlllts'-ell'i"v'l'VIiil-N6･",3,"igs,2･ Oii Some Solphosalt Minerals (Teti'ahedvite aiid 7'ennaRtite) from Northern Japan 75

iv Bokoi, Muroran City, Iburi Province, ffol

b. 'Xerwxaneite. Tennatlte has the same oeeuryenees as tetra,hedrite, but ;'s }ess widely distributed. enly one loeality (Osarizawa mine) lkas been re- ported, here we add a new locality oi" temiantite in northern Japan, i Osarizawa mine, I

Z. Crystai forxkrxs a. Tetscahedrite i Tetrahedrite from the Mutii mine, Moura, East-Tugaru County, Aomoyi Prefeetuye. [l]. If:o anCl K. S,u

iowing £orms were foui}d: o (l.11), 7z (2il), ?s (332), cg (llO), as

b. rTefiixax}tite. i [I]ennantite from the Osarizawa iiiine, Kazuno County, Akita I?re- fecture. The cryst･ai foyms of t･ennanttce from the Osarizawa mine have beeit studied by IV[. HosiNxL (2), [[]he faee$ observed on crystals are o (lttl), o, (Zll), a (110), a (100) and n (211). Pbllowing two' 'types of eombinations are distinguished (3) : Tetrahedren type, doiifiinantly o (ill) deve}ops. Rhombic dodeeahedron type, ehiefiy di (liO) predominates. iii Tennanti'te from £he Zenikamezawa mine, Osima Provinee, Hol<}

Fig. l. Fig. Z. Fig･ 3･ FYennantite crystals £rom 'the Zenikamezawa mine, }'Io'Krkaido.

3. Chemiefti Compesitiofi a. Teti'akedrite. Mateiri'als foy aRaiyses obtained eofisistect off brokell fragmeilts o£ On Some Suh'}hosalt Minerals (Tetrahedvi't.e and "Ven'naiitit,e> from Nort,hev/n Iiapall 77

erystals. Butt speeii'nens froin 't}}e two }n.ine$ iiained hk the 'ta}[)le stM po$sessed zineblende and quaytz as admixtui'es, I. The results of aiialyses are given in the following 'table

[I]ABT,E I Chemieal Coi:nposition of tetrahedrite.

l ,l pt- L No. l 1 I 2 3 ! .- ll･ l l 4 : Local'i'ty Iviutu il ]pte, bat6 mlne Mui'ovaii T'6'iE'e'"=i-l'h/6r I 1 M. &rr.Nm)f･Nl Cli･li'lp"l.a,.Eite,Fl.f,OY l,M. Kirr.Nii,xMAII C?･fteigLa,ti2.,S.SOr M. KiT.xixxlll'l 'Sl. Krs",NTi NtsfA ABalyst i' J I･ 27,54% I I i j s I 2S.70% 24,72% ll 22.26% 30.J2% l 25.41% l I･ s.:l2 l -5.55 l.44 As OA9 i' j' s.33 l 4.Sg. I･ io.;is I Sb 20JI5 2I.OO 8.55 25,2)3 22.17 I l/ Cu ?8,S2 4e.46 l2.l9 I/ P,5.92 ?,8,69 41.57 4.i`., i [ I"e l 4.`.)9 5,l4 l5.l5 5.2,4 i.99 Zn tu l 35.01 2. g) o 2.tt)5 ! Ag ilVJ 1 o.7o l O,27 i'l l Bi I o. t') c} 3isi-i iI' E Pb l.30 I I SiOL' 13.41 O,S3 I･ i l･ 'i'li ToEa' 'i i f}t},.l6 [ {5t}.f)l 'l 1 1 IOO,OO l l- 1oo.oe I 99.86 1 99.34 4" ''''' '' " ''''bl''' ''' i ''' ' '' t .. . [I]he obtained two results (1 and 2) with admixtttres dedueed and the remainder were reealcula't･ed to 100 pe'i= eent, [I]he ana}yses have been yedueed to Cu(B"e), Sb(As) and S atom yatio, whieh are given in table II.

[l]iNBm", II Atom ratio o£ tetrahedrite.

I' li. l I NO E 2 4 I I l 9 i i]oEaiit,y ' l I･ j Mutu min.e Dat6 rnine i Muroix-m Tein6 n.ii lie l I i 1 Cu

b. `fel-klxalktite. The matek-ials usec'l for analyses we/ e temiantite erys'tals fyom oite }oeality in Hol

.Mcm ww 1,um , mamu{ . ...thijtadiew2 No. -.7--I i' "l.".o.ealit;y ...... I Zen'il

As 'l tl.75 18,07 I Sb tt.ll t Cu I 4 ?. i) '.I E 46. t30 Fe l t---, , tt 'l I 4,5(! Zll Ell tv. t O,37 Ag i/r. Bi l tif' INiln O.35 Pb l O.'l7 Al,,O{, I t,r. sio, 1 0.43 l･ E iii [Vo'tal 99.66 99, l6

The a'tom ratios eaieulated f.rom t･hese ana.lyses are ,given be}ow:

TABitE IV Atom rat･ios of Tennantite, orderm 1 I No. F l l 1) i/]octlaii' ty Zeni"K'RmezawR inine l Osari2awa mine 1･ l

Cu (Fe) 76S--2.67 3 l So.-･, :].oo p, l I As

Tl]e ratios of the 't-wo ar!alyses elo$ely agree w"t･h 'tlke .formula: {Cu (Fe)} ,, As (Sb) S,,.

4. Xptray studies

TeXLrahedrite a,Rd t･Gniiant･ite belong to gray eopper ore. There is a eomplete series from the Sb to the As eompound; also Bi, Ag, Zn and Pb may be preseBt. Sinee the atomie radius of As differs slight･Iy from that of Sb, ie vLTould be expeeted that 'che tet･rahedrite st･ruetiure would differ Erom that of tennant･i£e by repl'aeement o£ some port!･on o£ the Sb atoms with As atoms. On t･he assumption t･hat a study of the strueture of those 'two minerals by X-ray methods migh't eop-tribLivJe some evidenee as to t･he vayiation of the lattiee eonst,ant, IX-ray diffraetion photograplis were taken o£ two speeimens eaeh o/f te'trahedrite and o{' t･enRailtite. IPowder diff.raction pat･t,erns were i:fiade with Cu radiia'tioR, using a eassett･e of 30.28 mm radius, The Iatrv]iee eonst･ant ct,,, of' ihese minera'ls was ealeu}ated in kvt,g's't,roin laUitits. (×lehe"ein). The })atterns glven by the t･wo minera,Is provecl to be similair, bu't there is slight differei}ee in the va}ue o£ the l,attlee eonstant･s. Zi}'ie ineasured lattice cons't･anlJ･s on these minerals are 3s follows: Tetra'l edrite, Mu'tu mine. a,, =:- l.OB5±O.05' A " Tein6. mine. IO.38+e.05 Tenan't･ite, Osarizawa miiie. 10,21 lO.06 " Zenil

TABT,E V

lt l e". '' .' n ' ' Lo･`alit,yswtmltmu" '' wnma' l As:Sb 1 ao i .lo.'lsg A Redvuth, Cornwall (7) i oo l i' 6sari.nyawa mine, Aki'ta Pvef. Ja}.)an oo li e,?it

i' ZLinikaine7aw3 mine, Hokkaido, japan 2,,SS .l O, L.i 4 1 Kaulsdov±', Ober/fvttinken (7) (S) l o.6 ei s l '10.S.,{;5 1 i il Mutu mi'fie, Aomori Pref. ,'lapan I O.x],r) l .le.35 ll･ [l]ein(} mine, Hol{kaido, Japan o.ti}e IO.3E

Sehla/flgenberg, Akai (7) (9) O.1tl9 l IO.`.)96 i Lake City, Colorado (7) (10) O.I24 i I O. 3.03 l Bot6s, Siebe:nbttrgeit (7) (I]) l O,i04 l iO.3k)3 r Weirmla'nd (7') 6`.') I o 1 lo.4oe va ' xx' ' ''ww'' t' munm' A study of this table at once reveals that incyeasing value of the As : Sb i･atio brings about a deek'ease in 'tlke !att･iee eons't･arit a･o.

St!1xxmary

[l]et･rahedri'te is a wide-spz'eacl mineval speeies in Rorthern Japan, The atom x'ati(os ealeul.q.t･ed /ffrom 'these ehemicai ap-alyses elose}y agree wi'i-h the £ormula of tetra-ftedy.{t･e ancl teimanti't･e-Rl,RiiiS,,, wliere Ri ls prineipally ()u (Fe or Zn) and Riii may be Sb and As. [I]he measured lattiee eonstaRt･s of both minerals fyom four loealiLties in nor'thern Japan are as follows: Tet}:aheclritt･e, Mu't'u mine, fXomori Pref, a･o :=: 10.?,5 l:O.05 oA " Tein6 mine, Hokkaido. 10.38±O.05 Teiman't'lte, Os.p.]riza.wa mine, Al from Northerii Japan Sl

[ hey agree well with the values obt.aiReCl by vELyious oehey iRves- ti,gatioi}s. Data obt･ained by the studies of chemieal eomposi'tions and X-ray diffractloii pattei'ns o£ the ewo minerals show a some inti･mate yelation- ship bet"reen the la'tL'iee eons'tant ao aric'l t･he As:Sb ratio. The lattiee constant･ ae of teLvrahedrite k}ereases with deeyease in the va,lue of the As : Sb ra'tio.

[Irhe writeys hearty tkank to Mr. M, [Vty{tN¥Asu for his helps in X-yay exammatlons. [l]he work here yeportecl was ma,de possible iR partthyough aid of the Grant in Aid for Fundamental Scient･ific Researeh, Miiiistr:y of Edu- eation. The wx'iteys are very ,o.'ratefutl for t･hls assistanee.

Refereixces

(1) [l]. I'i:() an{l K. SAKvsi." : WAp.x's Minerals of Japan, I, 3rd Ild, 19tt7, l29-･13e.

(L}) M. llos'mN,x: J. Geol. Soe. Tokyo, 15 (1908) 450.

(3> K. N.xis,Nsi}rA: Ibid. i)

(4.) Y". "Jf:NcJiiA't'sc;msc'[: Z. Il

(5) J. R･vn･xcors: Anal. Soe, Esp. Fis. Quim 25 2iS60; Chem. Zb!. I927, II, 2il9k'.

(c}) W. pi･; JoNG: E'roL:ff, Sehrift･, Del/ft, l9`.'S, 2'6, iXl (7) I.r. INffAc)H,vi･sc!iKi: lec. eit, (s) Y'. S.NNvui･llt(ii･:!= N. jb, Min. (ISS,')) {"'i92. (9) F. }]iLr.in･;NKo : Nan-lir. Univ. [l]emsk, 62 "9L'5) ･iOz'.

(l.O) I'. A. Gi･iN,it}i: Am. Jouvn. Sei 23

<1'.)) L. F. Nii.sox : Z. Kyis't. I (IS77) 4']i.