Drilling confirms new Porphyry discovery at Matilda

Serabi Gold plc (AIM:SRB, TSX:SBI), the Brazilian-focused gold mining and development company, is pleased to update the market on the successful maiden drill programme of the Matilda Prospect within the Palito Complex in the Tapajos region of Para State, Northern Brazil.

A PDF version of this release including all images can be accessed using the following link - https://bit.ly/3unOYcZ

Highlights

Mike Hodgson CEO said

It is obviously great news to confirm the discovery of a porphyry on our property. We now plan to follow-up with infill geophysical and geochemical surveys to help us better understand where we are within the system and focus future drilling. Significantly, the three holes completed to date targeted the geochemical high, but the core of the magnetic high has yet to be tested. We have engaged a number of external porphyry experts to assist us with moving this exciting programme forward.

“This is a very promising time for Serabi and between this discovery, the excellent progress with the development of Coringa, improved production from the Palito Complex, and advancing all our high priority regional targets, we look forward to updating all our stakeholders.

1 Copper equivalent grades calculated using spot metal prices as at 29 June 2022 of Gold: US$1,817/ ounce, Copper: US$3.81/ pound and Molybdenum: US$19.73/ pound.

Background

The Matilda Prospect is centered ~5km west-northwest, along the strike projection of the Sao Chico Mine, and 3km east – southeast of the Toucano Prospect drilled in 2021 which returned significant gold results hosted within breccia zones including 7.15m @ 258.24g/t Au (news release dated 07 April 2021).

Matilda was identified through systematic soil sampling on a 400m by 50m regional grid along the westward extension of the Sao Chico vein zone aimed at infilling data gaps within the regional geochemical coverage. The prospect was subsequently infilled to a 200m by 50m spacing following the identification of the Matilda and Matilda South Cu-Au-Mo anomalies.

Matilda manifests as a 2.5km by 1.2km, crescent shaped, 200ppm Cu in soil geochemical anomaly, elongated in a NW-SE direction. It is coincident with anomalous Au, Mo (offset to the west), W, Te, K (+/- Ag, Sn, Be, Ba, Mg) and depletion of Bi, Sb, Zn, Pb & Mn in comparison to the surrounding host rocks.

Three angled drill holes totalling 695.55m were completed in April 2022 targeting below the centre of the geochemical anomaly. Hole 22-MT-001 was drilled to 234.2m towards the east, intersecting vein arrays in a sub-parallel orientation, subsequently holes 22-MT-002 (210.57m) and 22-MT-003 (250.78m) were drilled to the south to intersect the vein arrays perpendicularly. Hole 22-MT-003 was drilled perpendicular to hole 22-MT-001 to better test the mineralisation encountered in the earlier hole.

Figure 1:   Plan of Matilda target showing geochemistry, geophysics and drill hole traces.
To access an image of Matilda target showing geochemistry, geophysics and drill hole traces
please use the following link: https://bit.ly/3AxItYK

The intersected geology is indicative of a Cu-Au-Mo porphyry system, with classical veinlets, stockwork and stringers (including A, B, EB and M-type veins) with extensive chalcopyrite (+/- bornite) and molybdenite mineralisation in all three holes within a potassic altered monzogranite host. Future exploration will target a number of aspects of this mineralisation including:

A number of experienced independent porphyry experts have been engaged to assist with analysing the results of the first three drill holes and developing the subsequent phase of exploration.

Matilda represents one of five compelling, zoned multi-element, soil geochemical anomalies defined by the exploration team in recent years along the margins of a 40km magnetic high.

Figure 2: Photographs illustrating chalcopyrite mineralisation within A-, EB- and M-veins
To access an image of chalcopyrite mineralisation within A-, EB- and M-veins
please use the following link: https://bit.ly/3OXqBdU

Abbreviations: Qtz – Quartz, Cpy – Chalcopyrite, Mt – Magnetite, Bt - biotite

Figure 3: Photographs illustrating molybdenite and chalcopyrite mineralisation within B-veins.
To access an image of molybdenite and chalcopyrite mineralization within B-veins.
please use the following link: https://bit.ly/3yEqpeb

Abbreviations: Qtz – Quartz, Cpy – Chalcopyrite, Mo – Molybdenite

Figure 4: Photographs illustrating bornite mineralisation within A-veins.
To access an image of bornite mineralisation within A-veins
please use the following link: https://bit.ly/3yilfDt

Abbreviations: Qtz – Quartz, Bn – Bornite

Below we present assay results for the entire three holes given the significance of the intervals drilled and the fact that anomalous mineralisation was encountered throughout each hole.

Table 1: Drill hole collars.

HoleEast
(UTM-WGS84)
West
(UTM-WGS84)
RLDip/ Azimuth
(°/°UTM)
Depth
(m)
22-MT-0016090709292172294.860/ 90 incl.234.20
22-MT-0026089759292462280.060/ 173.6 incl.210.57
22-MT-0036091209292222298.060/ 180 incl.250.78

Table 2: Drill hole assay results from hole 22-MT-001.

From
(m)
To
(m)
Interval
(m)
Gold grade
(ppb)
Copper grade
(ppm)
Molybdenum grade
(ppm)
Copper equivalent grade
(%)
0118545852.10.13%
1219847457.20.15%
23110250157.30.15%
3417244653.10.12%
4517945754.50.13%
5618549054.40.14%
67111245649.50.15%
7818544956.20.13%
8918858258.50.15%
91017673556.30.16%
1011111972838.60.18%
1112112267334.90.17%
1213175695400.14%
131417670440.20.14%
141518972631.60.15%
151617368234.40.14%
161716964075.70.15%
1718160587750.14%
18191636072150.22%
1920.11.1385521370.15%
20.121.41.36070242.30.13%
21.422.150.7512910258.350.20%
22.1523.151306166535.10.40%
23.1524.1513110454.660.13%
24.15250.85299357.690.12%
25261315028.390.08%
262711425816.50.04%
272812635521.50.06%
282913810151150.19%
29301388504.510.11%
303112369210.30.09%
313212365116.550.09%
32331174479.120.06%
33341163579.630.05%
34351295183.920.07%
35361205441.930.07%
363712263311.250.08%
3737.70.73178294.80.15%
37.7391.344139058.70.20%
3940148134016.90.18%
4041156152510.20.20%
414214692923.90.14%
4243163155534.50.22%
4344.251.25671570102.50.26%
44.2544.750.552210071.40.28%
44.75461.2545272030.60.32%
46471118215055.60.33%
4748161186538.70.25%
4849130118049.30.16%
4950.11.173109580.20.20%
50.151.41.333166044.70.21%
51.452.411813508.630.15%
52.453.41261185340.15%
53.454.71.334109098.80.18%
54.7561.3551065840.19%
5657173206011.90.26%
575811083100250.40%
58591103295011.250.37%
5960167225049.30.30%
6060.90.956153550.80.22%
60.961.80.995219012.10.29%
61.862.50.754179032.10.23%
62.563.250.75380859013.051.13%
63.2564.551.331882101041.10%
64.55650.4559159017.950.21%
656614912507.20.16%
6667172122511.40.18%
6768156183011.050.23%
6869.31.32695040.10.13%
69.3700.73692512.20.12%
7071163163520.10.22%
717217124308.860.30%
7273187218069.50.31%
73741153479020.20.60%
74751178629029.90.77%
75761712480108.50.35%
7677190277075.50.38%
7777.80.8471535107.50.24%
77.878.60.85616502940.36%
78.679.450.8542169029.80.21%
79.4580.350.94718651170.28%
80.3581.351872840330.36%
81.3582.351822450610.33%
82.3583.351164387048.50.53%
83.3584.551.23012101750.23%
84.5585.751.22597916.550.12%
85.75871.2565209018.550.26%
8788196299024.70.38%
8889184311017.40.38%
8990153186510.40.23%
909115116006.30.20%
9192144163012.80.20%
9293165212019.050.27%
9394159181529.20.24%
949515416857.110.21%
959616712502.840.17%
9696.60.6359593.550.12%
96.697.91.352164050.20%
97.9991.138125592.60.20%
99100133111010.80.14%
10010112387112050.73%
10110211772665.20.12%
10210312185340.10.12%
103104127109516.150.14%
104105128109011.70.13%
105106164172071.60.25%
10610714714956.880.19%
107108174263057.40.34%
108109129108042.40.15%
1091101268115.730.10%
110111122103517.350.13%
11111215115355.120.19%
1121131239113.760.11%
1131141100351041.30.44%
1141151158498033.20.63%
1151161349836.690.13%
116117.251.256918901840.33%
117.251180.75268796042.11.00%
1181191273955038.21.16%
119120123668406.50.85%
120120.850.8526486905.571.06%
120.85121.85129101010.20.13%
121.85122.550.739114011.50.15%
122.55123.55140169033.40.21%
123.55124.250.73111209.530.14%
124.25125.150.931108516.050.14%
125.15126.151239668020.20.84%
126.151270.8588299010.750.37%
127127.550.559228403.630.35%
127.55128.250.757193072.90.27%
128.25128.90.65149391012.80.50%
128.9129.60.7137426041.20.54%
129.61300.48628006.890.34%
130130.450.453210759.60.13%
130.45131.451132358016.20.46%
131.451320.551973168.60.12%
132133178247016.450.31%
13313414113851210.23%
134134.750.75431445141.50.25%
134.751361.2558211069.40.29%
13613713297410.70.13%
137138153168046.20.23%
138139.251.2549158018.450.20%
139.25140.251219257.070.11%
140.25141.25137141016.40.18%
141.25142.2512492211.80.12%
142.25143.2512594518.50.12%
143.25144.2515318751940.32%
144.25145.25137113516.10.15%
145.25146.25126110538.30.15%
146.25147.31.05521285440.19%
147.3148.250.9537125574.90.19%
148.25149.251441500193.50.28%
149.25150.25169201043.10.27%
150.25150.750.536125553.90.18%
150.751521.2511184.532.30.04%
15215311566510.20.08%
15315412620615.350.05%
1541551114579.610.06%
15515611448122.20.07%
15615711835416.450.06%
1571581147998.10.09%
158158.70.796689.050.08%
158.7159.350.654621925.20.07%
159.351600.6548163034.10.21%
160160.350.351234665.20.08%
160.351610.6571199590.10.30%
161161.70.710440201430.55%
161.71631.371779.770.03%
16316412070932.70.10%
16416511252314.20.07%
1651661146515.080.08%
166167.11.11794221.50.12%
167.1167.40.368968055.41.04%
167.4168.61.220113016.90.14%
168.6169.651.0530108034.30.15%
169.65170.81.1568291034.70.36%
170.81721.260227018.950.28%
17217311454630850.61%
173174168189541.60.26%
1741751104355046.90.45%
17517615415901680.28%
1761771509335570.42%
1771781256962230.20%
178178.80.85814358120.60%
178.81801.248153572.70.22%
180180.90.96632001490.44%
180.91821.12.51447.170.02%
182183152933.890.03%
183184.21.2537.64.710.01%
184.2185.41.251053.270.02%
185.4186.61.230153549.30.20%
186.6187.6156203075.10.28%
187.6188.651.0584277082.20.38%
188.65189.50.8535127577.20.19%
189.5190.5145165068.20.23%
190.5191.51612600197.50.40%
191.5192.5141186541.50.24%
192.5193.350.8540139059.90.20%
193.351940.65562100480.27%
19419515620402150.35%
195196.151.156019851200.30%
196.15196.550.42891195.60.16%
196.55197.55118127567.10.17%
197.55198.5511280980.40.13%
198.55199.55122121570.90.17%
199.55200.61.0518118526.70.14%
200.6201.614368901090.78%
201.6202.50.91366329.50.09%
202.5203.511570429.90.10%
203.5204.61.121541760.11%
204.6205.50.921109030.80.14%
205.5206.551.05157647.860.09%
206.55207.50.953217351090.25%
207.5208.250.7523129516.70.15%
208.25209.2512494315.10.12%
209.25210.10.8531169574.10.23%
210.1211.1162360031.80.42%
211.12120.9158626.70.10%
212213116119526.30.14%
21321411685651.30.12%
214215.121.1252022.670.03%
215.122160.88115325014.80.41%
216217.151.15651940270.25%
217.15218.451.324126516.50.15%
218.45219.30.8592185023.20.26%
219.3220.311174110230.50%
220.3221.31102409045.10.50%
221.3222.61.357196528.30.25%
222.6223.30.78325801720.40%
223.3224.41.1346113509.811.25%
224.4225.4150715350101.36%
225.42260.65816206.720.21%
22622711054130310.50%
227227.750.75452610170.30%
227.75228.60.8551154516.150.20%
228.6229.450.854413104.770.16%
229.452300.5517048608061.02%
230230.350.35135450019.250.55%
230.35231.41.05132358015.50.46%
231.4232.20.80182518.30.19%
232.2232.80.640614000891.33%
232.8233.50.70112013.550.12%
233.5234.20.7154373.780.06%
Assays provided by ALS Laboratories. 48 element four acid Inductively Coupled Plasma Mass Spectrometry (ICP-MS) with 50g fire assay for gold completed at ALS Belo Horizonte. Samples exceeding 1% copper using the ICP-MS methodology were re-assayed using the ore grade Cu-OG62 methodology at the ALS Lima.
Copper equivalent grades calculated using spot metal prices as at 29 June 2022 of Gold: US$1,817/ ounce, Copper: US$3.81/ pound and Molybdenum: US$19.73/ pound.

Table 3: Drill hole assay results from hole 22-MT-002.

From
(m)
To
(m)
Interval
(m)
Gold grade
(ppb)
Copper grade
(ppm)
Molybdenum grade
(ppm)
Copper equivalent grade
(%)
0118953019.80.13%
1219951920.60.13%
2317750719.050.11%
3418152019.60.12%
4519250518.550.12%
5618351219.350.12%
6718051819.450.12%
7818551220.10.12%
8918151319.850.12%
910110463921.10.15%
101119669121.90.15%
1112112580638.30.19%
121318674019.850.14%
1314163829120.13%
1415154105521.20.15%
151614898318.60.14%
16171102104093.40.22%
1718121994044.20.27%
18191142972260.21%
1920199127515.80.20%
2021.21.2100140528.30.22%
21.222.215515006.040.19%
22.223.371.179716256.010.23%
23.3724.551.1840154539.50.20%
24.5525.81.2533127515.550.16%
25.8271.22411957.780.14%
2727.40.4115502.910.06%
27.428.250.85264533.320.07%
28.2529.20.95578619.460.13%
29.230.41.276552.310.07%
30.430.950.552.56671.870.07%
30.9531.951444432.760.08%
31.9532.850.978252.30.09%
32.85341.15710904.630.12%
34351979840.09%
3536171534.80.02%
3636.760.76754.36.550.01%
36.7637.060.32.528.82.660.01%
37.0637.750.693515557.770.18%
37.7538.250.53319254.430.22%
38.25390.7516846506.860.59%
394015416303.120.20%
4040.90.9101401048.40.50%
40.941.40.5236875020.51.05%
41.4420.61956930440.85%
4242.50.5133460020.70.56%
42.542.870.376419957.210.25%
42.87441.13204161512.050.31%
4445157198554.90.27%
454616424706.880.30%
4647180286023.20.35%
474814416807.910.20%
4849137136015.450.17%
4950159179532.30.24%
505112796912.30.12%
5152.11.180245018.050.31%
52.1530.94517704.930.21%
535414214859.220.18%
54551165464070.80.62%
5556170186559.70.27%
5656.950.95105397014.40.48%
56.9557.650.790281044.90.37%
57.6558.951.32.550.515.30.01%
58.9560.251.3517.321.40.02%
60.2561.451.2517.31.60.01%
61.4562.51.05613.45.650.01%
62.563.40.937102528.20.14%
63.464.51.13377535.10.12%
64.565.61.15613604.490.18%
65.666.851.25187537029.20.68%
66.85681.15245612.720.07%
686913811859.650.15%
6970150133550.17%
707116413205.450.18%
717212983410.650.11%
727311546110.70.06%
737414011555.670.15%
74751244824.590.07%
7576146114522.80.16%
7677.31.33710455.190.13%
77.378.51.2103284020.40.37%
78.579.51137427022.60.53%
79.580.511704940117.50.67%
80.581.751.25190569027.30.72%
81.75831.253710602.650.13%
838414513754.110.17%
848512266515.70.09%
8586158171015.20.22%
8687147136516.850.18%
8788131803180.11%
8889148150518.30.19%
8990101945160.50.28%
9091141126014.10.16%
9192136114549.30.17%
9292.90.965123050.30.19%
92.993.91277466.670.10%
93.994.80.9277865.060.10%
94.896.11.3246541760.17%
96.1970.9110437012.50.52%
9798148167513.50.21%
9899145163512.950.20%
99100126123010.70.15%
10010112911805.930.14%
101102144164013.650.20%
10210313299719.350.13%
103104164205020.90.26%
104104.550.5586307041.20.39%
104.551050.453712455.810.15%
1051061267569.010.10%
106107.251.254811702.210.15%
107.25108.20.9558218014.60.27%
108.2108.80.683328032.90.40%
108.8109.8113636209.450.46%
109.8110.816721105.570.26%
110.8111.814715156.740.19%
111.8112.8172211046.70.29%
112.81141.25716756.250.21%
114114.750.754311203.230.14%
114.75115.60.856420401.860.25%
115.6116.550.9542210065.40.27%
116.55117.30.75349662.540.12%
117.31180.76712352.30.17%
118119.31.347125516.350.17%
119.3120.312894216.10.12%
120.3121.3143147513.150.18%
121.3122.150.8530103030.80.14%
122.15123.151177309.090.09%
123.15124.1511857340.20.09%
124.151250.8544149572.30.22%
125126149207022.30.25%
126127140163016.850.20%
127127.80.841163022.10.20%
127.8128.70.92677414.60.10%
128.7129.751.0549170528.20.22%
129.75130.751301195127.50.21%
130.751321.257418002740.37%
132133163205041.30.27%
133134134186574.80.25%
134134.90.91221330520.24%
134.9135.540.6435178083.60.25%
135.541360.461851825.90.08%
13613711952959.40.10%
1371381135572270.18%
13813911647619.30.07%
1391401113438.350.05%
14014111146962.40.09%
1411421950916.950.07%
14214311045912.150.06%
143144.211.2192824.40.04%
144.21145.51.292590531.40.12%
145.5146.30.8379774.860.13%
146.3147.3145121521.30.16%
147.3148.31164339.890.06%
148.3149.150.8534148019.80.18%
149.151500.8552199516.450.24%
150150.810.8141128528.90.17%
150.811521.19351150106.50.19%
152152.320.32179961490.19%
152.32152.750.432813852090.27%
152.751541.25766718.350.08%
15415512.52441570.11%
1551561368366.390.11%
15615712128110.850.05%
15715811129138.80.06%
15815911430149.80.07%
159160.071.07133799.890.05%
160.071610.9341162059.90.22%
161162.11.12663743.90.10%
162.1162.920.822985095.80.15%
162.92163.850.932980828.40.12%
163.851651.1527115529.10.15%
16516612267230.30.10%
16616713392041.20.14%
16716812910409.250.13%
168169.251.25371230270.16%
169.25170.20.9557198517.150.25%
170.2171.2163222040.50.29%
171.2172.150.9551206024.50.25%
172.15173.41.255524602670.42%
173.4174.551.1523190.514.70.04%
174.55175.55123159.55.130.03%
175.55176.551407977.290.11%
176.55177.450.9552070670.28%
177.45178.350.9243195513.80.37%
178.35179.35180269030.90.34%
179.351800.65428493019.950.80%
18018115467510.70.11%
1811821230315011.350.48%
182183.121.1276204060.50.29%
183.12184.21.0843164549.60.22%
184.21850.85930909.460.35%
185186147132540.40.19%
186187126106517.950.13%
187188153134014.950.18%
188189.251.2563194014.10.25%
189.25190.51.2557154525.20.21%
190.5191.250.7566167020.20.22%
191.25192.251501505100.19%
192.25193.10.853111558.830.14%
193.1193.850.7544203026.50.25%
193.851951.153929610431.26%
195195.60.61313410220.44%
195.6196.618424509.730.31%
196.6197.651.0557113014.80.16%
197.65198.65143135581.70.21%
198.65199.65130719770.13%
199.65200.050.43912502600.29%
200.05200.50.455310801280.21%
200.5201.40.93779983.40.15%
201.4202.451.053484222.40.12%
202.452030.553172310.050.10%
2032041279449.330.12%
20420513486696.60.16%
20520613276677.40.14%
2062071216266.20.08%
2072081317118.310.10%
2082091431060680.17%
20921013997949.70.15%
210210.570.5714382170.06%
Assays provided by ALS Laboratories. 48 element four acid Inductively Coupled Plasma Mass Spectrometry (ICP-MS) with 50g fire assay for gold completed at ALS Belo Horizonte. Samples exceeding 1% copper using the ICP-MS methodology were re-assayed using the ore grade Cu-OG62 methodology at the ALS Lima.
Copper equivalent grades calculated using spot metal prices as at 29 June 2022 of Gold: US$1,817/ ounce, Copper: US$3.81/ pound and Molybdenum: US$19.73/ pound.

Table 4: Drill hole assay results from hole 22-MT-003.

<
From
(m)
To
(m)
Interval
(m)
Gold grade
(ppb)
Copper grade
(ppm)
Molybdenum grade
(ppm)
Copper equivalent grade
(%)
01111845044.50.15%
12110446544.10.14%
231046244.50.07%
34175453450.12%
45198439430.13%
5619142043.50.13%
6717444641.50.12%
7818345445.50.13%
89.21.29545743.90.13%
9.210.461.2657529460.12%
10.4611.661.293589440.15%
11.6612.81.1411470152.80.18%
12.8141.245883939.20.42%
1415115682240.90.21%
1516.21.212770934.70.18%
16.2170.8171101029.90.24%
17181120112016.750.20%
18191113169023.70.26%
1920199161025.60.24%
2021179134515.30.20%
2121.80.874147511.60.20%
21.822.50.769124526.50.19%
22.523.250.7543116021.40.16%
23.25240.75821585420.24%
24251115102523.80.19%
2525.60.66910154.930.15%
25.626.851.2578109057.30.19%
26.85281.1546171042.80.23%
2828.80.8146206033.30.32%
28.829.40.6121213081.90.34%
29.430.30.9622290660.31%
30.331.20.9591625162.50.29%
31.231.50.3235897.310.08%
31.532.51153394.550.05%
32.533.5146183.52.10.05%
33.534.10.64473122.50.12%
34.135.21.12462727.20.09%
35.236.41.25366129.90.12%
36.437.61.2206136.320.08%
37.638.81.2151680130.18%
38.8401.24162530.60.11%
4040.650.659866927.10.15%
40.6541.71.0517101522.30.12%
41.742.60.92393125.60.12%
42.643.40.81772240.40.10%
43.444.30.94216304400.42%
44.345.10.89634606710.76%
45.145.90.86515752550.33%
45.9471.157184014.950.23%
4748170222088.30.32%
48491341380280.18%
4950133181558.60.23%
5050.950.9548193513.80.23%
50.95521.0539146045.10.20%
5253182275027101.74%
5353.850.8577231017.150.29%
53.85551.1512067602360.88%
5556148231074.30.30%
5657167209012.90.26%
575814920602230.36%
5859159189514.550.24%
5960.151.1568321027.20.38%
60.15610.8553238077.30.31%
6162160279024.80.33%
62631100256059.10.36%
6364.11.10224027.50.24%
64.1650.9110