Document XRg6zKkxKNdONBqReyaw031DJ

Industrial Minerals September 23, 1991 Cyprus Technical Center 8985 East Nichols, Suite 300 Englewood, Colorado 80112 303-643-5000 TOM LANDELS CYPRUS WESTERN SOURCE BHC-2 TALC Project No. 91-308 ISSUE . Talc produced at Western Source from Beaverhead Mine tailings may have properties which are competitive tor the California low-cost ceramics market. This ore is attractive for Western Source since it is available for reasonably low shipping costs from Montana, and can be sold for an attractive margin. This report provides data for characterization of this product milled from Beaverhead Mine tailings, referred to herein as BHC-2. CONCLUSIONS BHC-2 contains a higher percentage of talc than Western Source products currently targeted toward low-cost ceramics markets in California. BHC-2 was found to contain 0.1% hornblende. Hornblende is one of several varieties of amphibole minerals which are not regulated by the Federal Government. DISCUSSION Refer to the attached table for characterization data. A sedigraph curve is also attached. Plate I presents SEM /EDS photomicrographs and chemistry of two hornblende grains found in this talc. Hornblende (which is not regulated) differs from amphiboles of the actinolite/tremolite series (which are regulated) in that hornblende contains more aluminum than actinolite/tremolite. The presence of the aluminum cation leads to differences in crystal structure that further differentiate hornblende from actinolite/tremolite. If you have further questions, please don't hesitate to phone. Best regards, Quality Assurance and Technical Support Chuck Pugh Coatings Technologist Copies to: Francois Beyl, Jack Buettner, Ed McCarthy, Bill Sevy, Rich Zazenski, files PLAINTIFFS EXHIBIT CAM-43 ITA-Alfaro000186 BHC-2 TALC Project No. 91-308 Mineralogy Talc Chlorite Dolomite Magnesite Quartz Hornblende LOI @ 1000C Mean Particle Size Sedigraph Granulometer GE Brightness Hunter Color L a b X Y Z Hegman Oil Adsorption SRO Loose Density Surface Area % passing 200 mesh % passing 325 mesh DATA TABLE BHC-2 78 % 5 5 10 1.6 0.1 12.1% 10.5 microns 12.5 microns 77.7 91.1 -1.3 3.4 80.8 82.4 92.9 -0- 33.8 grams/100 grams 24.5 lbs/ft3 6.7 m2/gram 99.3 96.0 Cyprus Technical Center September 23, 1991 ITA-Alfaro000187 PARTICLE SIZE DISTRIBUTION SAMPLE IDENTIFICATION Steawhite 2 0 0 . Western S o u r c e ______________________________________ DATE -- 9 -1 --31 Density ^ 2 5 _ _ g/cc LIQUID Wate r ' .... -- Density -9 9 4 4 --g/cc Viscosity . . 7374 - c p Preparation 5 gins sample triturated with 5 mis 4% Calgon, 2% Daxad solution_____________ BY CLP ' : TEM PERATURE_______ 33___C CYPRUS ITA-Alfaro000188 Form 600/42701 BHC-2 TALC Project No. 91-308 Plate I SEM /EDS ANALYSES Cyprus Technical Center September 23, 1991 Michael Clark SEM /EDS chemistry: Na20 = 1.5% MgO = 11.5 A1203 8.6 Si02 47.3 K20 = 1.1 CaO = 10.4 Ti02 = 1.5 MnO = 0.6 Fe203 = 17.4 SEM/EDS chemistry: Na20 = 1.6% MgO = 11.7 A1203 = 12.0 Si02 = 46.0 K20 = 0.8 CaO = 10.7 Ti02 = 1.3 MnO = 0.4 Fe203 = 15.4 ITA-Alfaro000189 CYPRUS TECHNICAL CENTER-SERVICE REQUEST IREQUESTED BY: LAtfr>L.S PROJECT NO.: `f / " 7 & & gafcfflu Sa ANALYST(S): tfU C - ____ DATE SUBMITTED: Nature of Project: ? /- __Customer Complaint __Customer Assistance __Intralab Project 1 H**"' P * * * - __Competitive Product Evaluation .i^-Other / \ j y ) p R .a ^ B c 'T MARKET AREA: 2/Tft*/U Cf____________ , CUSTOMER: i^ e s 7 V ^ PRIORITY: _ Urgent, _ 1 week, j /i w e e k s , _ o th er__________ _ DESCRI1PPTTIIOON OF PROJECT Background: (aJ dT<Te? a tv fler,L rtiULfO A*****/ TiT 2 . <2 B e W I O t e A ___ i_ iS *f?- Purpose: f iJ-is j>9ao<*cT .H auen -- / * iyf/Lv----- \ /) iT n 'Y--------- P o , /~t enArtit-s______ irtHfift-Ji-- A- ii^- t Aicenr>____________ ________________ _______________________ ASamples: Number of , .Sample Description ^2 <pt1^,nT___ * i---------e.-- 7** C A ^ t . t * \ 4 T C i\ . f i t - ------------------------- -- ---- GENERAL TESTING iX X R D mineralogy _v/1000C LOI __ 400C Ash __ 105C Moisture _fc^5CRD/PLM Asbestos __ PLM Qualitative __ SEM EDS Chemistry _k^SEM Photomicrography __ Major Element Chemistry __ Trace Element Chemistry __ FTIR Spectrometry __ Acid Solubles __ Acid Insolubles _ pH ANALYSES REQUIRED y/S ed ig rap h PSD f^Granulometre PSD _^Dry Sieve Analyses sizes: *2oo jt- J x S __ Wet Sieve Analyses . sizes:________ j^H egm an jif^Oil Absorption _t -"Loose Bulk Density __ Tapped Bulk Density __ Pynometer Density ''"Surface Area ^Technidyne GEB ^ "H u n ter Color X Lab 7 . X2Z __ Brightness OTHER COMMENTS: A- /' n a ^ A K t T / -- A,\____ P<-A --i_ DISPOSITION OF SAMPLE: _ Return, _k""etain, _ Dispose. COPY REPORT TO: _____________ , _____________ . ------------- * ------------- > ------------- ' . ------------------------ , _____________ , ------------- - FUes ITA-Alfaro000190 1-6UOOOOJBilV-Vll MICROSCOPIC ANALYSES FOR AMPHIBOLES AND CHRSOTILE SAMPLE description l i r ^ u /irr* l7\/fi J fT ifiu itirc ------------------------ HATE ANALYST(S) r f L C ' ---------- POLARIZED LIGHT MICROSCOPI (photos, II any REF. No. Q! ________ Product Certification___ Other Proj . 7 8 ----- are on other Bide) SAMPLE PREPARATION Sample subjected to. 10Z-HCL treatment Heated / ____ YES for _____ rain. 6 70C NO ____ YES X recovered Approximately O.Z grams of sample suspended in 15ml of 70 1PA. 6 drops of s7 1rV m ! n l r atuWrieth 1 disposable transfer plpet onto labeled glass slide and allowed to dry in air f room lemp^ 1 drop of appropriate Cargille liquid is applied to the dried sample and covered with a coversllp. The^Iparation ifewminefwith polarized light microscopy with dispersion staining and, needed, phase contrast techniques. Each prep is traversed at least 5 times for the approximate length of the cover slip each time. Amphibole grains, if present, are noted. Amphibole grains are counted if amphibole population is less than approximately 0.51 . . . . . . . . . . . . . . ANALYSES FOR AMPHIBOLE TRAVERSE if OF AMPHIBOLE GRAINS 1 _____< 2 --------------- 2 <>_________ ______ 3^ . 4 0 ?________________ 5 COMMENTS . / A M P H I B O L E NOT DETECTED AMPHIBOLE DETECTED X Araphibole (corroborated by XRD) Dispersion Staining colors N-parallel._______ ______ N-perpend. Extf nnMnn! Other *__________________ _ ANALYSES FOR CHRSOTILE TRAVERSE 1 2 3 4 5 7/ OF CHRSOTILE GRAINS _______________________ -- ________________ ______ ______________________ _ COMMENTS CHRYSOT1LE NOT DETECTED CHRYSOTILE DETECTED ____ X Chrysotile (approx) Dispersion Staining colors N~paral lei____________ _ N-perpend.___________ __ ,. Extinction t __________ . Other 1__________ _________ ITA-Alfaro000192 MICROSCOPIC ANALYSES FOR AMPHIBOLES AND CURSOTILE SAMPLE DESCRIPTION__ WMXmr. St^\l S J j . jnv. lMt-i 'Tphun-*.------------------ - REF. No. / 'Z0 S___ Product Certification___ Other Proj . 9 / - ? o # ----- D A T E [ _ 2 r / _ ANALYSIS S)____ L L * --------- - POLARIZED LICET MICROSCOPI (photos,, if anr are on other side) SAMPLE PREPARATION Sample subjected to 10X-IICL treatment Heated ____ NO / ____ YES for ___ ^ NO _____ YES G 70C _____ Z recovered Approximately 0.2 grams of sample suspended in 15ml of 701 1PA. 6 drops of sample are placed with a disposable transfer pipet onto labeled glass slide and allowed to dry in air a t .ro.0". R i s i l o 1 drop of appropriate Carolile liquid is applied to the dried sample and covered with a coversllp. The preparation is examined with polarized light microscopy with dispersion staining and' as needed' phase contrast techniques. Each prep is traversed at least 5 times for the approximate l e n g t o : the cover slip each time. Amphibole grains, if present, are noted. Amphibole grains are counted if amphibole population is less than approximately 0.51 _ _ _ ______ _____ ___ I0 IT ^ANALYSES FOR AMPHIBOLE TRAVERSE O nF AMPHIBOLE GRAINS 1 2 3 0-------- 4 5 ^ ________ COMMENTS AMPIIIBOLE NOT DETECTED AMPHIBOLE DETECTED ____ % Araphibole (corroborated by XRD) Dispersion Staining colors N " p a r a l l e l _ _ _ _ ________ _ N-perpend.______________ Extinction_________ _____ O t h e r _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ANALYSES FOR CHRYSOTILE TRAVERSE 1 2 3 4 5 9 OF CHRYSOTILE GRAINS. __________________ ______ _______________________ ________________ -- __________________ -- ___________________ ___ COMMENTS CHRYSOTILE NOT DETECTED CHRYSOTILE DETECTED ____ X Chrysotile (approx) Dispersion Staining colors N-parallel ___________ _ N-perpend.___________ .-- Extinction______________ Other.__________________ _ ITA-Alfaro000193 MICROSCOPIC ANALYSES FOR AMPHIBOLES AND CIIRYSOTILE SAMPLE DESCRIPTION __ j'qaz&z --- f o n a r e _____ rsM ilV tl Tailings.---------------------- - REF. No. fl _______ . Product Certification___ Other Proj . c?/~ i s s---- HATE 9-1dAi A N A L Y S T ( S ) _ ^ Z ^ : ---------------------------- - POLARIZED LIG11T MICROSCOPI (photos, II any. a r e on other side) SAMPLE PREPARATION Sample subjected to I0X-HCL treatment ^ NO _____ YES Heated ____ NO / ____ YES t o r _____ rain. 0 70C _____ X recovered Approximately O.Z prams of sample suspended in 15ml of 701 1PA. 6 drops of sample are placed with a disposable transfer pipet onto labeled glass slide and allowed to dry in air at room l3 f SllD 1 drop of appropriate Cargllle liquid is applied to the dried sample and covered with a coversllp. Ihe^eparation i ^ a S ^ l U i polarized light microscopy with dispersion staining flnd; as needed' phase contrast techniques. Each prep is traversed at least 5 times for the,app" ^ u cover slip each time. Amphibole grains, if present, are noted. Amphibole grains are counted if amphibole population is less than approximately 0.51 _____....... .... JlNALYSES TRAVERSE 1 2 3 4 5 ( l>0 FOR AMPHIBOLE // OF AMPHIBOLE CRAINS 1 _______________________ ' <2^____________________ 0 ______________ ________ 0 _________ ___________ J 2 ______________ _______ COMMENTS A / V//7,. a , AMPHIBOLE NOT DETECTED AMPHIBOLE DETECTED ____ X Araphibole (corroborated by XRD) Dispersion Staining colors N-parallel.______ ______ _ N-perpend.________ ______ Extinctioni_________ _____ Other!_____________ ______ / A t r J - :-----, Q - ANA L I S E S FOR CH RYSOTILE IRAVERSE 1 2 3 4 5 // OF CHRYSOTILE CRAINS _______________ _________ ___________________ ___ _________ ________ ___________________ -- ___________________ -- COMMENTS CHRYSOTILE NOT DETECTED CHRYSOTILE DETECTED ____ X Chrysotile (approx) Dispersion Staining colors N-parallel_______ _______ N-perpend.________ ______ . Extinction i_____ _________ O t h e r !____________________ ITA-Alfaro000194 MICROSCOPIC ANALYSES FOR AMPHIBOLES AND CURSOTILE SAMPLE DESCRIPTION CifFltJ JS>o0UKC* (-Tk-h^Tf 2Q & ?f z - l7yi4 iixiliajoj REF. No. O / ? 6 ___ Product Certification. Other Proj . _ DATE ANALYST(S) 0\i POLARIZED LIGHT MICROSCOPI (photos, 1 any. are on other side) SAMPLE PREPARATION Sample subjected to iOX-HCL treatment t ^ NO ____ YES Heated ____ NO / ____ YES for _____ min. G 70C _____ Z recovered Approximately 0.2 grains of sample suspended in 15ml of 701 1PA. 6 drops of sample are Placej with " disposable transfer pipet onto labeled glass slide and allowed to dry In air at room temperature. 1 drop of appropriate Cargille liquid is applied to the dried sample and covered with a coversllp. Ihe^eparation if examinedwith polarized light microscopy with dispersion staining and, needed, phase contrast techniques. Each prep is traversed at least 5 times for the approximate length of the cover slip each time. Amphibole grains, if present, are noted. Amphibole grains are counted if amphibole population is less than approximately 0.51 .... . . . . . . . . ___ FOR AMPHIBOLE 0 OF AMPHIBOLE CRAINS COMMENTS cZ> 0 l 0 3 AMPHIBOLE NOT DETECTED AMPHIBOLE DETECTED ____ X Araphibole (corroborated by XRD) Dispersion Staining colors N-parallel __________ N-perpend.______ _______ _ Extinctions________ ______ Other s_____________ ______ _ ANALYSES FOR CHRYSOTILE TRAVERSE ;-- 2 T 6 5 if OF CHRYSOTILE GRAINS -- ----------- - -- ' ' ' COMMENTS ____ CHRYSOTILE NOT DETECTED ---- CHRYSOTILE DETECTED ____ X Chrysotile (approx) Dispersion Staining colors N~parallel_____________ _ N-perpend.__________ ____ Extinctions______________ _ Other:____________________ . ITA-Alfaro000195 MICROSCOPIC ANALYSES FOR AMPHIBOLES AND CURSOTILE SAMPLE DESCRIPTION REF. No. ______________ _ Product Certification___ Other Proj ______________ . DATE_______________ ANALYST (S )_________ __________ -- POLARIZED LICET HICROSCOPT (photos, if any. a r e on other aide) SAMPLE PREPARATION Sample subjected to 10Z-HCL treatment Heated NO / ____ YES for _____ min. 0 70C NO _____ YES l recovered Approxi.at.li M grans of p i e p e n d e d in 15.1 of 111 1PA. i drops of sa.pl<' ' P j TM l * disposable transfer plpet onto labeled glass slide and allowed to dry In air ,Jt . TM * .` .' .y. 1 drop of appropriate Cargllle liquid is applied to the dried sample and covered with a coversllp. The preparation is examined with polarized light microscopy with dispersion staining flnd' fls needed' phase contrast techniques. Each prep is traversed at least 5 times for the approximate l0n^ h of th! cover slip each time. Amphibole grains, if present, are noted. Amphibole grains are counted if amphibole population Is less than approximately 0.51 . . . . . . . . . . . . . . ANALYSES FOR AMPHIBOLE TRAVERSE fl OF AMPHIBOLE CRAINS 1 2 _L 3 'ILL 4 <0> 5 0 ? COMMENTS 26 tfj- 4 ^ - 2 77 57 ~t W~t AMPUIBOLE NOT DETECTED AMPHIBOLE DETECTED ____ X Araphibole (corroborated by XRD) Dispersion Staining colors N-parallel p u M ._______ . N-pemend. //:,/_____ Extinction ----- Other______________ _____ -*t> . _ ANALYSES FOR CHRYSOTILE TRAVERSE ---- 2 3 ^ ^ it OF CHRYSOTILE GRAINS -------- ' " 1~ ~ ~ " COMMENTS ____ CHRYSOTILE NOT DETECTED ---- CHRYSOTILE DETECTED ____ X Chrysotile (approx) Dispersion Staining colors N-parallel______________ N-perpend________________ Extinction______________ _ Other___________________ . ITA-Alfaro000196 MICROSCOPIC ANALYSES FOR AMPHIBOLES AND CHRSOTILE SAMPLE DESCRIPTION ia)i fa TM ffvH -----7 UM-- ---------------- HATE ANALYST(S)______-------------- REF. No. f/ 3 *______ Product Certification___ Other Proj. fV - J # ---- POLARIZED LICET MICROSCOPY (pbotoa. if aar arre o n o t h e r B i d e ) SAMPLE PREPARATION Sample subjected to 10Z-HCI* treatment Heated NO / j / Y E S for ,,^,<Z.min. 0 70C NO _jfl_YES __ I recovered Approximately O.Z grams of sample suspended in 15ml of 70* 1PA. 6 drops of sample are placed with a disposable transfer pipet onto labeled glass slide and allowed to dry in air at ro.B 1 drop of appropriate Cargille liquid is applied to the dried sample and covered with a coversllp. amphibole population is less than approximately 0.51 ANALYSES TRAVERSE 1 2 3 4 5 $'c<i>tr FOR AMPHIBOLE if OF AMPHIBOLE GRAINS ML_________________________________________ - MU--------------------------------------------------- -- - .------------------------------ _ j _______________________ 1________________ ___ AMPHIBOLE NOT DETECTED ---- AMPHIBOLE DETECTED ____ X Amphibole (corroborated by XRD) Dispersion Staining colors N-parallel _________ . N-perpend._________ _____ Extinction*_________ ____ Other *___________ ________ . COMMENTS // {[( 7 YTwil % - 1d ML f \ CXi A loL t TC ANALYSES FOR CHRYSOTILE TRAVERSE 1 2 3 4 5 it OF CHRYSOfIILE GRAINS. _______________ _________ _______________________ _______________________ ___________________ ___________________ -- COMMENTS CHRYSOTILE NOT DETECTED CHRYSOTILE DETECTED ____ X Chrysotile (approx) Dispersion Staining colors N-parallel ________ ____ N-perpend. _ ____________ _ Extinction*______________ _ Other *____________________ _ ITA-Alfaro000197