Analytical Sample Bundle Metadata

2011

GSC Izok Lake till/esker KIM and MMSIM counts

Type: lab data



Bundle Download

Download analytical data for this bundle in one of three formats, depending on the desired convention for treating values below the lower detection limit:

Bundle Description

Till and esker samples were shipped to Overburden Drilling Management (ODM) for processing, production of heavy mineral concentrates and indicator mineral picking.  In 2009, 53 till samples (54 minus 1 contaminated sample 09-MPB-080), one esker sample (09-MPB-003) plus 3 quality control samples for a total of 57 samples were processed at ODM.  Eleven till samples were collected and processed in 2010.  The <2.0 mm size fraction was processed to produce a non-ferromagnetic heavy mineral concentrate for selection of indicator minerals.  First, the <2.0 mm material was passed over a shaking table and the heavy table concentrate recovered and micropanned to recover gold and sulphides in the <0.25 mm fraction.  The minerals in the panned concentrates were counted and their size and shape characteristics recorded and then returned to the sample.  Concentrates were then sieved at 0.25 mm.  The 0.25 to 2.0 mm pre-concentrate was then further refined using heavy liquid separation in methylene iodide diluted to a SG of 3.2. After panning and heavy liquid separation, the >0.25 mm ferromagnetic fraction was then removed and the non-ferromagnetic heavy mineral fraction was sieved into three size fractions: 0.25-0.5, 0.5-1.0, 1.0-2.0 mm. The <0.25 mm fraction was archived. The 0.25-0.5 mm fraction was further subjected to paramagnetic separations using a Carpco® magnetic separator to produce <0.6 amp (strongly paramagnetic), 0.6 to 0.8 amp (moderately paramagnetic), 0.8 to 1.0 amp (weakly paramagnetic) and >1.0 amp (non-paramagnetic fractions) to assist counting and picking indicator minerals in this fine-grained fraction. The 0.25-0.5 mm fraction was cleaned with oxalic acid to remove oxidation stains (tarnish) from the grains and restore their natural colour, most importantly for sulphide minerals.

Four blank sand samples were inserted into the two batches prior to processing to monitor the quality of processing and picking at the lab: 09-MPB-001, -018 in the 2009 batch and 10-MPB-811 and -812 into the 2010 batch. The blank samples are weathered Silurian-Devonian granite (grus) of the South Nepisiguit River Plutonic Suite collected in the Miramichi Highlands approximately 66 km west of Bathurst, New Brunswick.  The material is unconsolidated and has the appearance of beach sand. It does not contain any precious or base metal indicator minerals.  Results for these four samples are reported along with the real samples.  A third sample (09-MPB-017) was inserted into the 2009 batch prior to processing, to monitor the quality of processing and picking at the lab.  It is a till sample from the Kirkland Lake area of northern Ontario that has been spiked with a few tens of kimberlite indicator minerals (TCA-031 KIM).

GSC Open File 7075 includes a flow chart that outlines the samle preparation procedures.  The Open File also includes the lab reports delivered by ODM.  The lab reports include numerous additional comments on the lab procedures.

Sample Classification (Analytical)

IndexSample CountSurveySample TypePrep Lab MaterialControl RefUnknown SourceDuplicates count
   Control Reference Unspecified Yes  No 
64  Till and lithogeochemical survey, NTS 86H/10, Izok Lake area, Nunavut and Northwest Territories, 2009-2010. (more) Till HMC separation (0.25-0.50 mm size fraction) No  No 
Till and lithogeochemical survey, NTS 86H/10, Izok Lake area, Nunavut and Northwest Territories, 2009-2010. (more) Esker HMC separation (0.25-0.50 mm size fraction) No  No 

Analytical Package Description

Laboratory: Overburden Drilling Management, Ottawa, Ontario (ODM)

Name: ODM HMC separation and KIM + MMSIM picking (more)

Overburden Drilling Management HMC separation and KIM/MMSIM picking

HMC concentrates are prepared following standard ODM procedures.  The concentrates are picked for a variety of minerals, including KIMs, MMSIMs, hematite and pyrrhotite.  The samples are also panned for < 0.25 mm gold grains.

Analytical Suites:

IndexName
1  ODM HMC separation
2  ODM HMC separation of <0.25mm size fraction
3  ODM HMC paramagnetic separation
4  ODM VG count
5  ODM – calculated gold concentrations
6  ODM KIM count ( HMC 0.25-0.5 mm fraction )
7  ODM KIM count ( HMC 0.5-1.0 mm fraction )
8  ODM KIM count ( HMC 1.0-2.0 mm fraction )
9  ODM MMSIM picked grain counts ( HMC 0.25-0.5 mm fraction )
10  ODM MMSIM picked grain counts ( HMC 0.5-1.0 mm fraction )
11  ODM MMSIM picked grain counts ( HMC 1.0-2.0 mm fraction )
12  ODM MMSIM grain counts
13  ODM hematite grain counts
14  ODM pyrrhotite grain counts

Analytical Methods:

IndexColumn NameSuite OrderMethod OrderSuite RepeatQuantityUnitsDetermination Limit
1  Wt_Bulk_Recvd    Wt  grams  
2  Wt_Tbl_Split    Wt  grams  
3  Wt_gt_2mm    Wt  grams  
4  Wt_Tbl_Feed    Wt  grams  
5  Wt_lt_2mm    Wt  grams  
6  Wt_Fn_Sieve    Wt  grams  
7  Wt_HvLq_Lgt    Wt  grams  
8  Wt_HvLq_Mag    Wt  grams  
9  Wt_NM_Tot    Wt  grams  
10  Wt_NM_Split  10    Wt  grams  
11  Wt_NM_lt_025_wash  11    Wt  grams  
12  Wt_NM_025_050  12    Wt  grams  
13  Wt_NM_050_100  13    Wt  grams  
14  Wt_NM_100_200  14    Wt  grams  
15  Wt_lt_025_tot    Wt  grams  
16  Wt_lt_025_lgt    Wt  grams  
17  Wt_lt_025_hvy    Wt  grams  
18  Wt_lt_025_hvy_mag    Wt  grams  
19  Wt_lt_025_hvy_nm    Wt  grams  
20  Wt_06A    Wt  grams  
21  Wt_08A    Wt  grams  
22  Wt_10A    Wt  grams  
23  Wt_gt_1A_Lgt    Wt  grams  
24  Wt_gt_1A_Hvy    Wt  grams  
25  VG_tot    VG Tot  count  
26  VG_reshaped    VG Reshaped  count  
27  VG_modif    VG Modified  count  
28  VG_pristin    VG Pristine  count  
29  VG_HMC_Wt    Wt  grams  
30  VG_tot_ppb    Au  ppb  
31  VG_reshaped_ppb    Au  ppb  
32  VG_modif_ppb    Au  ppb  
33  VG_pristin_ppb    Au  ppb  
34  KIM_GP_1    KIM GP  count  
35  KIM_GO_1    KIM GO  count  
36  KIM_DC_1    KIM DC  count  
37  KIM_IM_1    KIM IM  count  
38  KIM_CR_1    KIM CR  count  
39  KIM_FO_1    KIM FO  count  
40  KIM_GP_2    KIM GP  count  
41  KIM_GO_2    KIM GO  count  
42  KIM_DC_2    KIM DC  count  
43  KIM_IM_2    KIM IM  count  
44  KIM_CR_2    KIM CR  count  
45  KIM_FO_2    KIM FO  count  
46  KIM_GP_3    KIM GP  count  
47  KIM_GO_3    KIM GO  count  
48  KIM_DC_3    KIM DC  count  
49  KIM_IM_3    KIM IM  count  
50  KIM_CR_3    KIM CR  count  
51  KIM_FO_3    KIM FO  count  
52  Pck_alm_1    Alm  count  
53  Pck_ant_1    Ant  count  
54  Pck_and_1    And  count  
55  Pck_adr_1    Adr  count  
56  Pck_ap_1    Ap  count  
57  Pck_apy_1    Apy  count  
58  Pck_aug_1    Aug  count  
59  Pck_ccp_1    Ccp  count  
60  Pck_chl_1    Chl  count  
61  Pck_chr_1  10    Chr  count  
62  Pck_crn_1  11    Crn  count  
63  Pck_di_1  12    Di  count  
64  Pck_fac_1  13    Fac  count  
65  Pck_ghn_1  14    Ghn  count  
66  Pck_gn_1  15    Gn  count  
67  Pck_gru_1  16    Gru  count  
68  Pck_hd_1  17    Hd  count  
69  Pck_lo_1  18    Lo  count  
70  Pck_Mn_ax_1  19    Mn_Ax  count  
71  Pck_Mn_alm_1  20    Mn_Alm  count  
72  Pck_Mn_ep_1  21    Mn_Ep  count  
73  Pck_mol_1  22    Mol  count  
74  Pck_mnz_1  23    Mnz  count  
75  Pck_pl_1  24    Pl  count  
76  Pck_pmp_1  25    Pmp  count  
77  Pck_py_1  26    Py  count  
78  Pck_rt_1  27    Rt  count  
79  Pck_suz_1  28    Suz  count  
80  Pck_sps_1  29    Sps  count  
81  Pck_sp_1  30    Sp  count  
82  Pck_spl_1  31    Spl  count  
83  Pck_st_1  32    St  count  
84  Pck_steel_1  33    Steel  count  
85  Pck_tur_1  34    Tur  count  
86  Pck_zo_1  35    Zo  count  
87  Pck_alm_2  10    Alm  count  
88  Pck_ant_2  10    Ant  count  
89  Pck_and_2  10    And  count  
90  Pck_adr_2  10    Adr  count  
91  Pck_ap_2  10    Ap  count  
92  Pck_apy_2  10    Apy  count  
93  Pck_aug_2  10    Aug  count  
94  Pck_ccp_2  10    Ccp  count  
95  Pck_chl_2  10    Chl  count  
96  Pck_chr_2  10  10    Chr  count  
97  Pck_crn_2  10  11    Crn  count  
98  Pck_di_2  10  12    Di  count  
99  Pck_fac_2  10  13    Fac  count  
100  Pck_ghn_2  10  14    Ghn  count  
101  Pck_gn_2  10  15    Gn  count  
102  Pck_gru_2  10  16    Gru  count  
103  Pck_hd_2  10  17    Hd  count  
104  Pck_lo_2  10  18    Lo  count  
105  Pck_Mn_ax_2  10  19    Mn_Ax  count  
106  Pck_Mn_alm_2  10  20    Mn_Alm  count  
107  Pck_Mn_ep_2  10  21    Mn_Ep  count  
108  Pck_mol_2  10  22    Mol  count  
109  Pck_mnz_2  10  23    Mnz  count  
110  Pck_pl_2  10  24    Pl  count  
111  Pck_pmp_2  10  25    Pmp  count  
112  Pck_py_2  10  26    Py  count  
113  Pck_rt_2  10  27    Rt  count  
114  Pck_suz_2  10  28    Suz  count  
115  Pck_sps_2  10  29    Sps  count  
116  Pck_sp_2  10  30    Sp  count  
117  Pck_spl_2  10  31    Spl  count  
118  Pck_st_2  10  32    St  count  
119  Pck_steel_2  10  33    Steel  count  
120  Pck_tur_2  10  34    Tur  count  
121  Pck_zo_2  10  35    Zo  count  
122  Pck_alm_3  11    Alm  count  
123  Pck_ant_3  11    Ant  count  
124  Pck_and_3  11    And  count  
125  Pck_adr_3  11    Adr  count  
126  Pck_ap_3  11    Ap  count  
127  Pck_apy_3  11    Apy  count  
128  Pck_aug_3  11    Aug  count  
129  Pck_ccp_3  11    Ccp  count  
130  Pck_chl_3  11    Chl  count  
131  Pck_chr_3  11  10    Chr  count  
132  Pck_crn_3  11  11    Crn  count  
133  Pck_di_3  11  12    Di  count  
134  Pck_fac_3  11  13    Fac  count  
135  Pck_ghn_3  11  14    Ghn  count  
136  Pck_gn_3  11  15    Gn  count  
137  Pck_gru_3  11  16    Gru  count  
138  Pck_hd_3  11  17    Hd  count  
139  Pck_lo_3  11  18    Lo  count  
140  Pck_Mn_ax_3  11  19    Mn_Ax  count  
141  Pck_Mn_alm_3  11  20    Mn_Alm  count  
142  Pck_Mn_ep_3  11  21    Mn_Ep  count  
143  Pck_mol_3  11  22    Mol  count  
144  Pck_mnz_3  11  23    Mnz  count  
145  Pck_pl_3  11  24    Pl  count  
146  Pck_pmp_3  11  25    Pmp  count  
147  Pck_py_3  11  26    Py  count  
148  Pck_rt_3  11  27    Rt  count  
149  Pck_suz_3  11  28    Suz  count  
150  Pck_sps_3  11  29    Sps  count  
151  Pck_sp_3  11  30    Sp  count  
152  Pck_spl_3  11  31    Spl  count  
153  Pck_st_3  11  32    St  count  
154  Pck_steel_3  11  33    Steel  count  
155  Pck_tur_3  11  34    Tur  count  
156  Pck_zo_3  11  35    Zo  count  
157  Ccp_Pct  12    Ccp  percent  
158  Ccp_Count  12    Ccp  count  
159  Mol_Pct  12    Mol  percent  
160  Mol_Count  12    Mol  count  
161  Sp_Pct  12    Sp  percent  
162  Sp_Count  12    Sp  count  
163  Gn_Pct  12    Gn  percent  
164  Gn_Count  12    Gn  count  
165  Apy_Pct  12    Apy  percent  
166  Apy_Count  12  10    Apy  count  
167  Lo_Pct  12  11    Lo  percent  
168  Lo_Count  12  12    Lo  count  
169  Py_Pct  12  13    Py  percent  
170  Py_Count  12  14    Py  count  
171  Po_Pct  12  15    Po  percent  
172  Po_Count  12  16    Po  count  
173  Gth_Pct  12  17    Gth  percent  
174  Gth_Count  12  18    Gth  count  
175  Ghn_Pct  12  19    Ghn  percent  
176  Ghn_Count  12  20    Ghn  count  
177  Spl_Pct  12  21    Spl  percent  
178  Spl_Count  12  22    Spl  count  
179  Di_Pct  12  23    Di  percent  
180  Di_Count  12  24    Di  count  
181  Mn_Ep_Pct  12  25    Mn_Ep  percent  
182  Mn_Ep_Count  12  26    Mn_Ep  count  
183  Crn_Pct  12  27    Crn  percent  
184  Crn_Count  12  28    Crn  count  
185  Mn_Ax_Pct  12  29    Mn_Ax  percent  
186  Mn_Ax_Count  12  30    Mn_Ax  count  
187  Rt_Pct  12  31    Rt  percent  
188  Rt_Count  12  32    Rt  count  
189  Ky_Pct  12  33    Ky  percent  
190  Ky_Count  12  34    Ky  count  
191  Sil_Pct  12  35    Sil  percent  
192  Sil_Count  12  36    Sil  count  
193  Tur_Pct  12  37    Tur  percent  
194  Tur_Count  12  38    Tur  count  
195  St_Pct  12  39    St  percent  
196  St_Count  12  40    St  count  
197  Sps_Pct  12  41    Sps  percent  
198  Sps_Count  12  42    Sps  count  
199  Ol_Pct  12  43    Ol  percent  
200  Ol_Count  12  44    Ol  count  
201  Opx_Pct  12  45    Opx  percent  
202  Opx_Count  12  46    Opx  count  
203  Chr_Pct  12  47    Chr  percent  
204  Chr_Count  12  48    Chr  count  
205  Ap_Pct  12  49    Ap  percent  
206  Ap_Count  12  50    Ap  count  
207  Mnz_Pct  12  51    Mnz  percent  
208  Mnz_Count  12  52    Mnz  count  
209  Hem_grey  13    Hem_grey  count  
210  Hem_red  13    Hem_red  count  
211  Po  14    Po  count  
Date modified: