Country for PR: United Kingdom
Contributor: PR Newswire Europe
Monday, November 02 2020 - 19:00
AsiaNet
Atlantic Nickel reports successful exploration drilling results and outlines significant resource potential at its Palestina Ni-Cu-PGE Project, 26km from its Santa Rita Mine
LONDON, Nov. 2, 2020 /PRNewswire-AsiaNet/ --

Highlights

- Atlantic Nickel is pleased to announce the results of 7,140m (29 holes) that 
has confirmed the discovery of new zone at the Palestina intrusive Ni-Cu-PGM 
complex 
- Palestina is located within 26km from the Santa Rita mine and processing 
facility, well within trucking distance 
- The deposit is an open pit target with underground potential. The new 
drilling has highlighted the potential to confirm additional resources upon 
follow-up infill and extensional drilling 
- Mineralisation at Palestina occurs along 3,000m of strike and 500m depth in a 
similar setting to Santa Rita at the southern and western edge of a 
mafic-ultramafic intrusive complex 
- Drill intercepts at Palestina are showing approximately 10 times more gold, 
platinum and palladium content than encountered at Santa Rita 
- Intervals of up to 42m length down hole have been encountered and the 
mineralised horizon is wide open at depth and along strike to the North

   Increasing grades in deeper intersections and the presence of semi-massive 
and massive sulphide intervals suggest further resource potential exists 
towards the base of the intrusion 

   Highlight intercepts from assays received to date:

   - DHPA-035: 18.05m @ 0.49% Ni-Eq from 94.50m 
   - DHPA-038: 42.42m @ 0.45% Ni-Eq from 18.00m 
   - DHPA-039: 21.55m @ 0.32% Ni-Eq from 54.00m 
   - DHPA-041: 17.00m @ 0.46% Ni-Eq from 107.00m 
   - DHPA-047: 25.47m @ 0.37% Ni-Eq from 130.53m 
   - DHPA-053: 28.19m @ 0.67% Ni-Eq from 510.95m and 22.14m @ 0.78% Ni-Eq from 
517.00m 
   - DHPA-056: 19.50m @ 0.73% Ni-Eq from 499.50m
Paulo Castellari, CEO Atlantic Nickel & Appian Capital Brazil, commented:

"We are delighted to have made a new discovery at the south western extension 
of the Palestina intrusion. The nickel and precious metals mineralization 
identified is located just 26km from the Santa Rita Mine - well within trucking 
distance of our existing site infrastructure. 

This discovery is testament to Atlantic Nickel's exploration team and further 
confirms our confidence in the business' potential to generate strong investor 
returns and benefit from the growth in electric vehicles. 

We are assessing the potential for the discovery at Palestina to support open 
pit resources. We also continue to evaluate our six regional targets, Santa 
Maria, Aiquara, Ponto Novo, Machadinho, Ibicui and Ibitupa for additional 
follow up work - including drilling in 2021"

Location and Access

The Palestina prospect is located 26km to the south west of Santa Rita and is 
easily reached by secondary roads, with final access provided by local 
community tracks and drill roads prepared by the company.


Infographic - 
https://mma.prnewswire.com/media/1324645/Appian_Figure_1_Infographic.jpg   
Figure 1: Location diagram of Santa Rita, Palestina and other exploration 
targets. 

The project is located on two mining licence applications submitted by the 
company to the Brazilian Mining Agency in July 2019.

Geology and Mineralization

Palestina is located on the same geological belt as the Santa Rita Mine, namely 
Itabuna-Salvador-Curaça Belt ("ISC"), the same belt that has drawn the 
attention of Rio Tinto, Ero Copper and Largo Resources. AN controls eight 
prospects on thirty-three exploration permits in the district, covering 371km2. 

The belt covers Archean and Paleoproterozoic rocks that have been intruded by a 
series of intrusive rocks that form mafic-ultramafic complexes (MUC) of varying 
sizes. These intrusives are the host to magmatic sulphide deposits such as 
Santa Rita and the orebodies in the Curaca valley that are operated by Ero 
Copper. 

In most cases the mineralisation hosted in these mafic-ultramafic complexes is 
dominated by nickel with varying by-product copper, cobalt and platinum group 
elements. In some cases, such as Ero's Caraiba deposits the mineralization is 
dominated by copper.  Other magmatic sulphide Nickel-Copper_PGE deposits 
include world class mines such as Norilsk, Sudbury, Voisey's Bay and Duluth. 
These deposits commonly host large volumes of disseminated sulphide 
mineralisation but also contain significant zones of very high grades of 
massive sulphide accumulation. Potential for these exist also at depth at 
Palestina and at Santa Rita. 

AN's 2020 drilling program was designed to follow up historic drill intercepts 
of nickel-sulphide mineralisation identified by the previous operator. AN's 
work program targeted new areas of the intrusion, where the basal pyroxenite 
unit surfaces and shows a coincident elevated nickel in soil geochemical 
anomaly. The disseminated nickel and copper sulphides are hosted predominantly 
in a pyroxenite unit at the base of the intrusive complex.

Infographic - 
https://mma.prnewswire.com/media/1324646/Appian_Figure_2_Infographic.jpg 


Figure 2: Map showing historic holes, as well as 2020 completed holes mostly 
focusing on the south west extension. The dashed blue line shows the contact of 
the pyroxenite unit with the basement gneisses. The background is an image of 
the systematic nickel in soil geochemistry. 



Infographic - 
https://mma.prnewswire.com/media/1324647/Appian_Figure_3_Infographic.jpg 

Figure 3: Geologic map showing historic holes, as well as 2020 completed holes. 
The box (SN) outlines a representative geologic drill section shown below. 

The drilling in all cases runs through a long interval of pyroxenite with minor 
intervals of gabbro-norite and late mafic, as well as pegmatite dykes. Sulphide 
mineralisation is limited to the basal 10m to 50m of the intrusion and mostly 
consists of disseminated sulphide mineralisation with some intervals of 
semi-massive and massive sulphide intervals. 

One important difference to the Santa Rita nickel sulphide mineralisation are 
the significantly higher platinum group element grades at Palestina, specially 
palladium. The host lithologies at Palestina are also lacking the very high 
olivine content dunites, which is expected to result in a materially lower MgO 
content.


Infographic - 
https://mma.prnewswire.com/media/1324648/Appian_Figure_4_Infographic.jpg 

Figure 4: South-north geologic section showing simplified geology along with 
historical holes 27 and 30 and 2020 holes 48 and 53. 

Infographic - 
https://mma.prnewswire.com/media/1324649/Appian_Figure_5_Infographic.jpg 

Figure 5: Photographs of drill core. Top row shows examples of fine 
disseminated nickel sulphide mineralisation. The lower left shows coarse 
grained disseminated to semi-massive mineralisation. The lower right shows a 
short interval of massive nickel sulphide mineralisation. Grades are for the 1m 
intervals samples in that location. Higher sulphide content relates to higher 
nickel and platinum group element grades. 

Drilling

The drilling campaign is managed by AN personnel based in Ipiau, a regional 
centre close to the Santa Rita mine. Smaller towns are located within 10km of 
the drill site and these provide locations for field accommodation and 
provisioning logistics. 

Drilling is contracted out to Energold's Brazilian subsidiary which is 
providing high performance, light weight, man portable drill rigs and 
experienced drill crew. The use of these rigs ensures that AN can operate under 
with a minimal environmental footprint during the early exploration phases. 

Drill core is logged and sampled at AN's exploration core facility in Ipiau. 
Samples are shipped to ALS Chemex in Belo Horizonte where they are crushed and 
pulverized. A 200g split of the Pulp is then shipped to ALS's laboratories in 
Lima or Vancouver where a comprehensive list of analysis is carried out 
including analysis for sulphide nickel content, gold and PGE analysis as well 
as major element analysis. Core samples are 100% crushed -2mm and a 250g 
aliquot is pulverized to -200# for assaying. Nickel sulphide leaching with 
ammonia citrate/hydrogen peroxide with ICP-AES reading. Gold and PGE determined 
by fire assay and ICP-AES reading. Base metals and major elements are four acid 
leached with ICP-AES reading. 

The results received from the 2020 program to date are listed in table 1 below. 
The intercept width and grades are broadly in line with what early stage 
historic drilling at Santa Rita, except for the much higher PGE grades at 
Palestina. 

Table 1: Drill intercepts received to date from the 2020 drilling program at 
Palestina. 
		  

Hole          Length    From    NiS(1)   Cu    Co
no.            (m)      (m)      (%)    (%)    (ppm)

DHPA-032	14.0	206.0	0.17	0.05	110	
and	        10.3	234.1	0.25	0.06	95	
DHPA-033	12.3	222.8	0.16	0.04	95	
DHPA-035	18.1	94.5	0.27	0.07	95	
DHPA-036  	 2.1	239.0	0.27	0.07	106	
and	         1.0	282.5	0.56	0.22	156	
DHPA-037         4.0	272.9	0.35	0.15	132	
and	         1.9	281.8	0.20	0.05	105	
and	         0.9	307.3	0.42	0.12	137	
DHPA-038	42.4	18.0	0.25	0.09	140	
DHPA-039	21.6	54.0	0.18	0.06	117	
DHPA-040	 5.4	38.0	0.26	0.13	129	
DHPA-041        17.0	107.0	0.23	0.08	117	
DHPA-042	 6.7	157.4	0.28	0.07	115	
DHPA-043	 3.0	314.0	0.36	0.09	120	
and	         8.0	335.0	0.17	0.05	98	
DHPA-045	 7.2	224.8	0.23	0.05	95	
DHPA-046	 9.6	217.7	0.17	0.05	112	
DHPA-047	25.5	130.5	0.20	0.06	118	
DHPA-048	 6.0	214.0	0.27	0.07	110	
and	         7.8	232.0	0.20	0.06	107	
DHPA-049	13.0	199.0	0.20	0.05	107	
and	         4.0	236.2	0.43	0.07	116	
DHPA-053	22.1	517.0	0.48	0.12	146	
or       	28.2	511.0	0.41	0.10	135	
DHPA-055	 7.0	148.0	0.25	0.07	109	
and	        10.0	161.0	0.21	0.07	104	
DHPA-056	19.5	499.5	0.42	0.11	129	
DHPA-057	13.0	187.0	0.17	0.05	107

(continued) 	

Hole             Au     Pt       Pd    NiEq(2)(3) 
no.	        (g/t)  (g/t)    (g/t)   (%) 
DHPA-032	0.08	0.09	0.26	0.35
and	        0.13	0.08	0.33	0.47
DHPA-033	0.05	0.09	0.20	0.31
DHPA-035	0.10	0.13	0.46	0.54
DHPA-036	0.22	0.20	0.56	0.63
and	        0.14	0.74	1.11	1.26
DHPA-037	0.29	0.09	0.54	0.75
and	        0.12	0.12	0.39	0.44
and	        0.12	0.10	0.69	0.80
DHPA-038	0.13	0.11	0.26	0.48
DHPA-039	0.08	0.06	0.18	0.34
DHPA-040	0.14	0.18	0.42	0.58
DHPA-041	0.13	0.15	0.42	0.51
DHPA-042	0.16	0.33	0.72	0.70
DHPA-043	0.18	0.27	0.77	0.80
and	        0.09	0.10	0.27	0.36
DHPA-045	0.11	0.11	0.36	0.46
DHPA-046	0.05	0.08	0.26	0.34
DHPA-047	0.09	0.13	0.27	0.41
DHPA-048	0.15	0.11	0.35	0.52
and	        0.08	0.08	0.34	0.41
DHPA-049	0.09	0.09	0.21	0.37
and	        0.12	0.08	0.69	0.78
DHPA-053	0.13	0.16	0.59	0.85
or	        0.12	0.14	0.50	0.73
DHPA-055	0.14	0.30	0.53	0.59
and	        0.13	0.17	0.42	0.49
DHPA-056	0.20	0.17	0.61	0.80
DHPA-057	0.08	0.10	0.32	0.38
	

1. All intervals presented contain sulphide mineralisation 
2. Prices in US$ used for NiEq calculation: Ni: 6.50/lb; Cu:3.00/lb; 
Co:20.00/lb; Au:1,350/oz; Pt:800/oz; Pd:1,500/oz
3. The following formulae was used to calculate NiEq with no adjustments for 
recoveries: NiEq=(Total dollar value of metals contained)/Ni price

 Significance of Results and Next steps

The program at Palestina was designed to provide an initial evaluation of the 
open pit nickel sulphide resource potential, that could be exploited as a 
satellite operation to provide additional mill feed to the Santa Rita Mine. The 
prospect is well within trucking distance to the site infrastructure. 

Drilling to date has been wider-spaced at between 100 and 200m, aimed at 
tracing out the mineralised envelope near surface and down dip. A number of 
holes have been completed to intercept the mineralisation at depth, these 
generally show an increase in grades and width with some intervals of higher 
grade massive sulphide mineralisation, including holes 53 and 56.

AN is currently completing geological modelling and developing a block model to 
evaluate the exploration potential for open pit resources. This will help 
define the next phase of infill and extension drilling to arrive at a mineral 
resource estimate. 

The deeper holes are of significant wides and grades and warrant further 
follow-up and evaluation with the view of defining potential underground mining 
targets. To this effect AN is planning a program of down hole EM to evaluate 
the deeper holes for conductor panels that may identify associated areas of 
massive sulphide mineralisation. Deeper holes are also being considered to test 
the base of the bowl-shaped intrusion for massive sulphide accumulations.  
Finally, AN is also evaluating its other six regional targets, Santa Maria, 
Aiquara, Ponto Novo, Machadinho, Ibicui and Ibitupa for additional follow up 
work including drilling in 2021. 

About Appian 

Appian Capital Advisory LLP is the investment advisor to long-term value 
focused private equity funds that invest solely in mining and mining related 
companies. Appian is a leading investment advisor in the metals and mining 
industry, with global experience across South America, North America, Australia 
and Africa and a successful track record of supporting companies and the 
advancement of their projects into production. Appian acquired Atlantic Nickel, 
the 100% owner of Santa Rita, in 2018.

About Atlantic Nickel 

Atlantic Nickel is the owner and operator of Santa Rita, an open-pit 
nickel-copper-cobalt sulphide operation located in Bahia, Brazil. Santa Rita is 
a fully permitted, past-producing nickel mine currently undergoing an 
operational restart. The Mine benefits from US$1bn of prior investment and has 
an estimated production capacity of 6.5 Mtpa. One of the largest open pit 
nickel sulphide mines in the world, Santa Rita is a high-quality asset 
operating with a first quartile cost position. It is one of a few remaining 
nickel sulphide mines globally that can offer additional supply towards the 
production of Class I nickel products and exposure to the high-growth potential 
of the electric vehicle industry.

Source:  Atlantic Nickel and Appian Capital Advisory LLP