ANNEX VIII: APPENDIX E MINERALOGY RESULTS

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1 ANNEX VIII: APPENDIX E MINERALOGY RESULTS

2 Tables Table E-1 Mineralogical Analysis of Waste Rock Samples... 1 Table E-2 Mineralogical Analysis of Kimberlite Coarse Reject Samples... 3 E-i

3 Table E-1 Mineralogical Analysis of Waste Rock Samples Sample ID Pdef-1 (a) Pdef-3 (a) Pdef-4 (a) Pdef-5 (a) Pdef-10 (a) Pdef-16 (a) Pdef-29 (a) Pdef-30 (a) Pre-test (b) Two-Mica Two-Mica Metasedimensedimensedimensedimensedimendioritdiorite Schist Schist Granite Granite Granite Granite Biotite Biotite Biotite Biotite Biotite Biotite Diabase Diabase Diabase Granite/ Granite/ Rock Type Pegmatite Pegmatite Area Pigeon Pigeon Pigeon Pigeon Pigeon Pigeon Pigeon Pigeon Beartooth Beartooth Pigeon Pigeon Pigeon Pigeon Sable Sable Sable Sable Mineral Identification and Formula Alb - Albite, calcian - (Na,Ca)Al(Si,Al) 3 O 8 Ap - Apaptite - Ca 5 (PO 4 ) 3 (OH) 0.33 F 0.33 Cl 0.33 Aug - Augite, aluminian - Ca(Mg,Fe,Al)(Si,Al) 2 O 6 Post-test (b) Trace Trace <1 < Bt - Biotite - K(Mg,Fe) 3 (AlSi 3 O 10 )(F,OH) Cal - Calcite - CaCO Calm - Calcite, magnesian - (Ca,Mg)CO Car - Carbonate Trace Trace <1 <1 Chl - Chlorite - (Mg,Fe,Al) 6 (Si,Al) 4 O 10 (OH) 2 Cpx - Clinopyroxene - (Ca,Mg,Fe,Al) 2 (Si,Al) <1 <1 < Cpy - Chalcopyrite - CuFeS 2 Trace Trace <1 <1 <1 <1 Trace Trace Dol - Dolomite - CaMg(CO 3 ) Ede - Edenite - Na 0.46 Ca 1.7 Mg 3.44 Fe 1.72 Al 1.1 Si 6.9 O 23 (OH) Ep - Epidote - Ca 2 Fe 2.25 Al 0.75 (SiO 4 ) 3 (OH) Trace <1 <1 <1 1 1 Hm - Hematite - Fe 2 O Ill - Illite - (K,H 3 O)Al 2 Si 3 AlO 10 (OH) Ilm - Ilmenite - Fe 1.10 Ti.90 O Kaol - Kaolinite - Al 2 Si 2 O 5 (OH) KFd - Potassium Feldspar - KAlSi 3 O M-L - Mixed Layer Ms - Muscovite - KAl 3 Si 3 O 10 (OH) 1.8 F Mt - Magnetite - Fe 3 O <1 <1 <1 <1 Phl - Phlogopite - KMg 3 (Si 3 Al)O 10 (OH) Phl1 - Phlogopite (Fe-rich) - K(Mg 2.22 Fe 0.78 )((Si 2.63 Al 1.37 )O (OH) 1.51 ) Phl2 - Phlogopite (Fe - K(Mg 2.22 Fe 0.78 )((Si 2.63 Al 1.37 )O (OH) 1.51 ) Plag - Sodium Feldspar - NaAlSi 3 O Po - Pyrrhotite - Fe 0.95 S Trace Py - Pyrite - FeS 2 <1 <1 Trace 1 1 <1 <1 E-1

4 Table E-1 Mineralogical Analysis of Waste Rock Samples Sample ID Pdef-1 (a) Pdef-3 (a) Pdef-4 (a) Pdef-5 (a) Pdef-10 (a) Pdef-16 (a) Pdef-29 (a) Pdef-30 (a) Pre-test (b) Two-Mica Two-Mica Metasedimensedimensedimensedimensedimendioritdiorite Schist Schist Granite Granite Granite Granite Biotite Biotite Biotite Biotite Biotite Biotite Diabase Diabase Diabase Granite/ Granite/ Rock Type Pegmatite Pegmatite Area Pigeon Pigeon Pigeon Pigeon Pigeon Pigeon Pigeon Pigeon Beartooth Beartooth Pigeon Pigeon Pigeon Pigeon Sable Sable Sable Sable Mineral Identification and Formula (Continued) Qtz - Quartz - SiO Rt - Rutile - TiO 2 Trace Trace 2 2 <1 <1 Sid - Siderite - FeCO Sl - Sphalerite - (Zn,Fe)S Trace Smec - Smectite Total Clay - Kaol+Ill+Clr+M-L+Smec Trace Trace <1 <1 Tour - Tourmaline - NaFe 3 Al 6 (BO 3 ) 3 Si 6 O 18 (OH) 4 Post-test (b) Trace <1 Note: All values in the table above represent percentages. a) Source: GR Petrology Consultants Inc XRD, SEM, and Elemental Analysis of Eight Solid Samples for Maxxam Analytics. Report prepared for Maxxam Analytics. Submitted May b) Source: SRK Consulting Beartooth Pipe Acid/Alkaline Rock Drainage (ARD) and Geochemical Characterization Plan. Report prepared for BHP Billiton Diamonds Inc. Submitted January c) Source: SRK Consulting Pigeon Pipe Acid/Alkaline Rock Drainage (ARD) and Geochemical Characterization Plan. Report prepared for BHP Billiton Diamonds Inc. Submitted January d) Source: SRK Consulting Sable Pipe Acid/Alkaline Rock Drainage (ARD) and Geochemical Characterization Plan. Report prepared for BHP Billiton Diamonds Inc. Submitted January = mineral was not identified in sample; < = less than; ID identification. E-2

5 Table E-2 Mineralogical Analysis of Kimberlite Coarse Reject Samples TP 1 4 m TP m TP m TP m TP m TP 5 0 m TP m Sample Carbonate Sulfide Comment TP 09B 0-15 cm Trace; in altered matrix of kimberlite chips Patches of extremely finegrained, slightly brown, in soft of kimberlite - appears to be less than in m Trace-01, rimming oliving grain; with serpentine; typically finegrained; one grain as replacement of phenocryst None observed - may be extremely fine-grained in Patches and fine grained, in of kimberlite; one 0.5 mm chip carbonate (calcite) Extremely fine-grained, granular mosaics in None observed Fine-grained in kimberlite Pyrrhotite (sharp edges, extremely minor pitting) Trace - pyrrhotite with rim of goethite (visible in plane light); embayed edges; round framboidal grains - typically in fine-grained Trace, extremely fine - dominantly Pyrrhotite, minor round form, also subhedral; slightly embayed, pitted Rare, including trace amounts of framboids Liberated grain, clean edges - no embayments; chip with framboids One 0.5 mm grn pyrite, embayed edges; minor rounded grains, <5 µm Trace free grains, embayed edges, minor round form Minor rounded forms; typically in dark, fine laminated chips Mixed granite, kimberlite garnet Mixed granite, kimberlite garnet with strong reaction coronas Garnet (with coronas), granite, kimberlite Kimberlite fragments, large garnet with strong rim, granite Dominantly kimberlite, with garnet, minor granite Mixed granite and kimberlite chips Kimberlite, garnet - with coronas, minor granite Kimberlite, garnet present, minor granite TP 09B m Section unusable Section unusable Section unusable TP cm None observed Rare chip with rounded grains TP cm TP m TP 10 dk gry TP cm TP cm (same sample as above) Extremely fine in of one chip Trace, replacement of round grains Trace carbonate, fine-grained in matrix; rare discrete grain Discrete grain in, possible minor aggregates in Trace in Trace, subhedral to extremely rare rounded; clean edges Euhedral grain in granite chip; sporadic, rare liberated grains - clean rims Trace, Irregular, rimmed, extremely fine grained - typically subrounded Round forms in individual chips, one larger aggregate (anisotr) Minor round forms, in chips; irregular trace, embayed finegrained TP m No carbonate observed Trace sulfide, round forms TP cm TP No carbonate observed No carbonate observed Aggregate - orange/brown, granular appearance; rare framboids, also orange in appearance; one grain blueviolet to pink brown anisotr. - white reflect 5% chips with round forms, shale Kimberlite, garnet, minor granite chips, rare shale Kimberlite, minor granite chips, garnet Kimberlite, granite; garnet chips with reaction rims/fractures Kimberlite, garnet; granite chips present Kimberlite chips, garnet Kimberlite, garnet, large Ilmenite (opaque-drk red, low refl) Kimberlite, Organic matter in pile (Tundra) Kimberlite, granite chips dominant; garnet Kimberlite, garnet with strong alteration rims; minor granite E-3

6 Table E-2 Mineralogical Analysis of Kimberlite Coarse Reject Samples CK "as is" CK + 2 mm CK - 2 mm Sample Carbonate Sulfide Comment Carbonate as granular mosaics in of kimberlite Carbonate in matrix of kimberlitic material No observed carbonate 10 g CK 190 g No observed carbonate 40 g CK 160 g One minute grain Black shale fragments with framboids ; also sporadic in kimberlite Needle, irregular pyhrrhotite; also zone with round, framboids in shale One aggregate of pyrrhotite, 2 mm across; clean rims Extremely fine, probably framboids (in shale) Extremely fine, typically round, framboid in dark, find-grained Mixed kimberlite and granite chips Kimberlite, granite - approx. 15 coarse chips Numerous chips (>50), kimberlitic and granite Kimberlite and granite chips, organic material Kimberlite and granite chips, organic material Source: SRK Waste Rock Storage Area Seepage and Waste Rock Survey Report. Prepared for BHP Billiton Diamonds Inc. Vancouver, BC, Canada. m = metre; mm= millimetre; µm = micrometre; < = less than; > = greater than; % = percent. E-4

APPENDIX F PHOTOGRAPHS OF CORE SAMPLES

EKATI DIAMOND MINE LONG LAKE CONTAINMENT FACILITY INVESTIGATION 2013 EBA FILE: E14103013-01.002 MAY 2014 ISSUED FOR USE APPENDIX F PHOTOGRAPHS OF CORE SAMPLES LLCF Geotechnical Site Investigation Report_IFU.docx