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QUANTITATIVE DETERMINATION OF HEXAGONAL AND MONOCLINIC PYRRHOTITES BY X-RAY DIFFRACTION : A DISCUSSION.CLARK AH.1970; CANAD. MINERALOGIST; CAN; 1970, VOL. 10, NUM. 0002, P. 278 A 280Miscellaneous

ALPHA-ARSENIC SULFIDE, FROM MINA ALACRAN, PAMPA LARGA, CHILE.CLARK AH.1970; AMER. MINERALOGIST; USA; 1970(8), VOL. 55, NUM. 0008, P. 1338 A 1344Miscellaneous

POTASSIUM-ARGON AGE AND REGIONAL RELATIONSHIPS OF THE PANASQUEIRA TUNGSTEN-TIN MINERALIZATION.CLARK AH.1970; COMUNIC. SERV. GEOL. PORTUG.; PRT; 1970, VOL. 54, P. 243 A 261Miscellaneous

A SECOND OCCURRENCE OF BERNDTITE : LAGARES-DO-ESTANHO, QUEIRIGA, VISEU, PORTUGAL.CLARK AH.1969; NEU. JB. MINERAL., MONATSCH.; DEU; 1969(9), VOL. 1969, NUM. 0009, P. 426 A 430Miscellaneous

PRELIMINARY OBSERVATIONS ON CHROMIAN MACKINAWITE AND ASSOCIATED NATIVE IRON, MINA DO ABESSEDO, VINHAIS, PORTUGAL.CLARK AH.1969; NEU. JB. MINERAL., MONATSCH.; DEU; 1969(6), NUM. 0006, P. 282 A 288Miscellaneous

A PROBABLE SECOND OCCURRENCE OF JAMBOR'S "FIBROUS IRON SULFIDE".CLARK AH.1970; AMER.MINERALOGIST.; 1970, VOL. 55, P. 283 A 284Miscellaneous

AN OCCURRENCE OF THE ASSEMBLAGE, NATIVE SULFUR-COVELLITE-"CU5.5XFEXS6.5X", AUCANQUILCHA, CHILE.CLARK AH.1970; AMER.MINERALOGIST.; 1970(6), VOL. 55, P. 913 A 918Miscellaneous

AN UNUSUAL COPPER-IRON SULFIDE, CU0.12 FE0.94 S1.00, FROM THE YLOJARVI COPPER-TUNGSTEN DEPOSIT, FINLAND.CLARK AH.1970; ECON. GEOL.; USA; 1970(8), VOL. 65, NUM. 0005, P. 590 A 591Miscellaneous

SCHLUZENITE, CUPRIAN HETEROGENITE, FROM MINA PABELLON, COPIAPO, CHILE.CLARK AH.1970; MINERAL. MAG.; GBR; 1970(12), VOL. 37, NUM. 0002, P. 943 A 944Miscellaneous

STUDIES ON THE MINERALOGY AND GEOCHEMISTRY OF THE YLOEJAERVI COPPER DEPOSIT, SOUTHWEST FINLAND.(RESUME THESE).CLARK AH.1969; TRANS. INST. MIN. METALL., G.B; GBR; 1969(2), VOL. 78, NUM. 0747Miscellaneous

HYPOGENE AND SUPERGENE COBALT-COPPER SULFIDES, CARRIZAL ALTO, ATACAMA, CHILE.CLARK AH.1974; AMER. MINERALOGIST; USA; 1974, VOL. 59, NUM. 0003-0004, P. 302 A 306Serial Issue

MINERALOGY OF THE ALACRAN DEPOSIT, PAMPA LARGA, CHILE, VI. ANTIMONIAN ARSENIC ALLOYSCLARK AH.1972; NEU. JB. MINERAL., MONATSH.; DTSCH.; DA. 1972; NO 10; PP. 447-454; ABS. ALLEM.; BIBL. 13 REF.Serial Issue

ARSENOLAMPRITE CONFIRMED FROM THE COPIAPO AREA, NORTHERN CHILE.CLARK AH.1970; MINERAL. MAG.; GBR; 1970(6), VOL. 37, P. 732 A 733Miscellaneous

SULPHURIZATION OF CORDIERITE, MINAS DA PANASQUEIRA, PORTUGAL.CLARK AH.1969; BULL. GEOL. SOC. FINL.; FIN; 1969, NUM. 0041, P. 231 A 234Miscellaneous

METALLOGENIC EPOCHS OF THE CENTRAL ANDES: A PRELIMINARY ASSESSMENT.CLARK AH.1976; GEOL. SOC. AMER., ABSTR. PROGRAMS; U.S.A.; DA. 1976; VOL. 8; NO 6; PP. 813Conference Paper

MINERALOGY OF THE ALACRAN DEPOSIT, PAMPA LARGA, CHILE. VII. NATIVE ARSENIAN SILVERCLARK AH.1972; NEU. JB. MINERAL., MONATSSCH.; DTSCH. ; 1972, NUM. 0011, P. 500 A 505Serial Issue

MINERALOGY OF THE ALACRAN DEPOSIT, PAMPA LARGA, CHILECLARK AH.1972; NEU. JB. MINERAL., MONATSH.; DTSCH.; DA. 1972; NO 11; PP. 500-505; ABS. ALLEM.; BIBL. 8 REF.Serial Issue

COMPOSITIONAL DIFFERENCES BETWEEN HEXAGONAL AND RHOMBOHEDRAL MOLYBDENITE.CLARK AH.1970; NEU. JB. MINERAL., MONATSCH.; DEU; 1970(1), VOL. 1970, NUM. 0001, P. 33 A 38Miscellaneous

ON THE NATURAL OCCURRENCE OF TIN SULPHIDES (BERNDTITECLARK AH.1972; NATURWISSENSCHAFTEN; DTSCH. ; 1972, VOL. 59, NUM. 0008, P. 361Serial Issue

A COPPER-TIN ALLOY (ETA -CU6SN5) FROM PANASQUEIRA, PORTUGALCLARK AH.1972; NEU. JB. MINERAL., MONATSH.; DTSCH.; 1972, NUM. 0003, P. 108 A 111Serial Issue

A NATURAL OCCURRENCE OF HEXAGONAL CU1.83 IN RANCAGUA, CHILECLARK AH.1972; NATURE PHYS. SCI.; G.B.; 1972, VOL. 238, NUM. 0086, P. 123 A 124Serial Issue

EVIDENCE FOR THE GEOLOGICAL OCCURENCE OF MOLYBDENUM TRISULPHIDE.CLARK AH.1971; NATURE PHYS. SCI.; 1971, VOL. 234, NUM. 0052, P. 177 A 178Miscellaneous

MOLYBDENITE 2H1, MOLYBDENITE 3R, AND JORDISITE FROM CARRIZAL ALTO, ATACAMA, CHILE.CLARK AH.1971; AMER. MINERALOGIST; 1971, VOL. 56, NUM. 0009-0010, P. 1832 A 1835Miscellaneous

AN UNUSUAL COPPER-IRON SULFIDE, CU0.12 FE0.94 S1.00, FROM THE YLOJARVI COPPER-TUNGSTEN DEPOSIT, FINLAND.CLARK AH.1970; ECON. GEOL.; USA; 1970(8), VOL. 65, NUM. 0005, P. 590 A 591Miscellaneous

ARSENIAN SPHALERITE FROM MINA ALCARAN, PAMPA LARGA, COPIAPO, CHILE.CLARK AH.1970; GEORG-AUGUST. UNIV. GOTTINGEN DISS. DOKT. MATH.-NATURWISS. FAK.; 1970, VOL. 55, P. 1794 A 1797Miscellaneous

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