INFILLING, AND IDENTIFYING EXTENSIONS TO KNOWN
MINERALIZATION AT FIFTEEN MILE STREAM AND COCHRANE HILL
HIGHLIGHTS INCLUDE:
FMS -
PLENTY:
13m @ 3.03g/t Au from 30m (incl 1m @
21.5g/t Au)
11m @ 5.92g/t
Au from 114m (incl 1m @ 61.2g/t Au)
8m @ 12.84g/t Au from 132m (incl 1m @
88.7g/t Au)
COCHRANE
HILL:
6m @ 9.77g/t Au from
70m (incl 1m @ 22.0g/t Au)
5m @ 8.08g/t Au from 133m (incl 1m @
22.60g/t Au)
16m @ 1.70g/t
Au from 114m, then 1m @ 22.8g/t Au from 137m,
1m
@ 33.9g/t Au from 152m and
1m @ 50.6g/t Au from158m.
VANCOUVER, Feb. 22, 2018 /CNW/ - Atlantic Gold
Corporation (TSX-V: AGB) ("Atlantic" or the "Company") is
pleased to report further assay results received from the Phase 3
Resource Expansion drilling program at the Fifteen Mile Stream gold
deposit and first assay results from the Cochrane Hill gold
deposit.
As per previous news releases the objectives of the Phase 3
Resource Expansion drilling program are (i) to identify additional
gold resources immediately peripheral to those resources previously
defined at Fifteen Mile Stream and Cochrane Hill, (ii) at Cochrane
Hill and at Fifteen Mile Stream – particularly at the Hudson and
Plenty zones, to upgrade previously defined inferred resources to
measured and indicated categories, and (iii) to seek additional new
resources within the 350m gap between
the Plenty and Egerton MacLean zones at Fifteen Mile
Stream.
1. FIFTEEN MILE STREAM
Fifteen Mile Stream is located
approximately 57km northeast of the central processing facility at
Touquoy and is readily accessible by highway. Fifteen Mile Stream's current measured and indicated
mineral resources stand at 10.59 million tonnes at 1.33 g/t Au for
452,000 oz. at 0.35g/t cut-off grade. Inferred mineral
resources amount to 6.64 million tonnes at 1.12 g/t Au for 240,000
oz. at 0.35g/t cut-off grade (see Company announcement July 21, 2017)1.
The remainder of the Phase 3 Resource Expansion drilling program
to be undertaken at Fifteen Mile Stream in 2018 has now been
completed with 36 holes for 3,325m
having been drilled. This brings the total Phase 3 Resource
Expansion drilling program completed at Fifteen Mile Stream to 221
holes for 24,325m. Holes have
generally been drilled on 25m x
20m centres, although for the
first-pass drilling along the 350m
gap between Plenty and Egerton MacLean holes have been drilled on
50m-spaced sections.
Assay results have now been received from a further 45 holes,
with about 80% of all assays expected from this program having now
been received. At Plenty, infill and step-out drilling westwards
from earlier drilling on 25m-spaced
sections continues to outline a steep, northerly dipping, tabular
zone of gold mineralization over more than 400m strike length, frequently represented by
wide intervals of moderate grade material enhanced by high grade,
single sample (1m) mineralization
(eg. the three highlighted intervals above). At this time
mineralization appears to be more vein-hosted than that along the
hinge of the Fifteen Mile Stream anticline at Hudson and Egerton MacLean just to the north
and it's possible that plunging high grade shoots are present.
Assays reported here from Egerton MacLean and Hudson, the eastern and western deposits
respectively along the Fifteen Mile Stream anticline, are from
widely distributed positions infilling and testing the peripheries
of these deposits as presently known on 25m-spaced sections. While fairly well defined
mineralized zones continue to persist, drill information appears to
be approaching the lateral limits of these two deposits, as
presently understood.
First-pass drilling further east from Plenty on 50m-spaced sections in the hitherto un-drilled
gap between Plenty and Egerton MacLean continues to encounter
encouraging shallow mineralization possibly offset to the north of
the eastern projection of the Plenty mineralization.
The accompanying cross sections and drilling progress plan can
be viewed here:
Fifteen Mile Streem Gold Project Drill Hole Plan
1The Mineral Resource
estimate for Fifteen Mile Stream is quoted at a cut-off grade of
0.35g/t. It has an effective date of July 20, 2017 and was prepared
as part of a technical report in accordance with NI 43-101 by Mr.
Neil Schofield, a principal of FSSI (Australia) Pty Ltd, released
on September 1, 2017 on SEDAR.
|
Assay results are tabulated below:
Hole id
|
Easting
|
Northing
|
Dip
|
Az.
|
Depth
(m)
|
Significant
Intervals
(≥0.5g/t Au and up to
3m internal dilution)
|
From
(m)
|
To
(m)
|
Width
(m)
|
Grade
(g/t Au)
|
EGERTON
MACLEAN
|
FMS-17-275^
|
13175
|
10060
|
-45
|
175
|
92
|
|
|
|
NSA
|
FMS-17-277
|
13175
|
10040
|
-45
|
175
|
71
|
48
|
50
|
2
|
2.73
|
FMS-17-280^
|
13175
|
10020
|
-45
|
175
|
50
|
|
|
|
NSA
|
FMS-17-282^
|
13125
|
10080
|
-45
|
175
|
110
|
77
|
78
|
1
|
4.05
|
FMS-17-283^
|
13125
|
10060
|
-45
|
175
|
92
|
62
|
65
|
3
|
1.48
|
FMS-17-286
|
13125
|
10020
|
-45
|
175
|
50
|
20
|
23
|
3
|
2.41
|
FMS-17-287
|
13075
|
10060
|
-45
|
175
|
92
|
63
|
68
|
5
|
0.63
|
FMS-17-288^
|
13075
|
10080
|
-45
|
175
|
110
|
13
|
14
|
1
|
5.73
|
and
|
|
|
|
|
|
68
|
69
|
1
|
6.89
|
FMS-17-292^
|
13025
|
10080
|
-45
|
175
|
110
|
|
|
|
NSA
|
FMS-17-296^
|
13025
|
10020
|
-45
|
175
|
50
|
22
|
24
|
2
|
16.89
|
incl.
|
|
|
|
|
|
22
|
23
|
1
|
31.10
|
FMS-17-298^
|
12975
|
10080
|
-45
|
175
|
110
|
75
|
83
|
8
|
1.10
|
FMS-17-300^
|
12975
|
10040
|
-45
|
175
|
71
|
|
|
|
NSA
|
|
HUDSON
|
FMS-17-237^
|
12325
|
10120
|
-45
|
175
|
172
|
99
|
102
|
3
|
3.16
|
and
|
|
|
|
|
|
121
|
126
|
5
|
0.77
|
FMS-17-301^
|
12275
|
10120
|
-45
|
175
|
170
|
120
|
124
|
4
|
1.18
|
and
|
|
|
|
|
|
145
|
150
|
5
|
0.94
|
FMS-17-303^
|
12275
|
10100
|
-45
|
175
|
151
|
|
|
|
NSA
|
FMS-17-307^
|
12275
|
10040
|
-45
|
175
|
80
|
26
|
28
|
2
|
2.03
|
and
|
|
|
|
|
|
42
|
43
|
1
|
13.75
|
FMS-17-309
|
12275
|
10020
|
-45
|
175
|
61
|
|
|
|
NSA
|
|
PLENTY
|
PL-17-036^
|
12675
|
9800
|
-60
|
175
|
161
|
131
|
132
|
1
|
152
|
PL-17-039
|
12775
|
9780
|
-60
|
175
|
110
|
83
|
85
|
2
|
7.92
|
PL-17-047^
|
12800
|
9820
|
-60
|
175
|
161
|
116
|
128
|
12
|
1.71
|
PL-17-067^
|
13000
|
9820
|
-45
|
175
|
100
|
30
|
43
|
13
|
3.03
|
incl.
|
|
|
|
|
|
42
|
43
|
1
|
21.50
|
PL-17-070^
|
12900
|
9770
|
-50
|
175
|
52
|
9
|
10
|
1
|
25.70
|
and
|
|
|
|
|
|
21
|
22
|
1
|
36.30
|
PL-17-071^
|
12875
|
9780
|
-60
|
175
|
110
|
45
|
46
|
1
|
15.75
|
PL-17-080^
|
12750
|
9745
|
-50
|
175
|
61
|
|
|
|
NSA
|
PL-17-082^
|
12700
|
9760
|
-60
|
175
|
100
|
62
|
68
|
6
|
0.61
|
and
|
|
|
|
|
|
73
|
81
|
8
|
0.42
|
PL-17-084^
|
12650
|
9760
|
-60
|
175
|
112
|
76
|
79
|
3
|
7.20
|
incl.
|
|
|
|
|
|
76
|
77
|
1
|
21.00
|
and
|
|
|
|
|
|
84
|
88
|
4
|
1.50
|
PL-18-089^
|
12625
|
9720
|
-60
|
175
|
82
|
|
|
|
NSA
|
PL-18-090^
|
12650
|
9720
|
-60
|
175
|
76
|
|
|
|
NSA
|
PL-18-091^
|
12625
|
9740
|
-60
|
175
|
100
|
|
|
|
NSA
|
PL-18-093^
|
12650
|
9740
|
-60
|
175
|
82
|
39
|
47
|
8
|
2.33
|
PL-18-094^
|
12600
|
9760
|
-60
|
175
|
127
|
95
|
96
|
1
|
11.55
|
PL-18-095^
|
12600
|
9780
|
-60
|
175
|
160
|
98
|
99
|
1
|
4.32
|
and
|
|
|
|
|
|
114
|
125
|
11
|
5.92
|
incl.
|
|
|
|
|
|
122
|
123
|
1
|
61.20
|
and
|
|
|
|
|
|
129
|
130
|
1
|
8.37
|
PL-18-096^
|
12600
|
9740
|
-60
|
175
|
100
|
|
|
|
NSA
|
PL-18-097^
|
12575
|
9780
|
-60
|
175
|
160
|
102
|
107
|
5
|
1.01
|
and
|
|
|
|
|
|
127
|
128
|
1
|
20.40
|
and
|
|
|
|
|
|
132
|
140
|
8
|
12.84
|
incl.
|
|
|
|
|
|
132
|
133
|
1
|
88.70
|
PL-18-098^
|
12600
|
9720
|
-60
|
175
|
85
|
|
|
|
NSA
|
|
PLENTY TO EGERTON
MACLEAN GAP
|
PL-17-051^
|
13100
|
9860
|
-45
|
175
|
100
|
|
|
|
NSA
|
PL-17-053^
|
13100
|
9840
|
-45
|
175
|
100
|
|
|
|
NSA
|
PL-17-055^
|
13100
|
9920
|
-45
|
175
|
100
|
44
|
64
|
20
|
0.66
|
PL-17-057^
|
13150
|
9940
|
-45
|
175
|
100
|
54
|
59
|
5
|
0.74
|
PL-17-059^
|
13050
|
9860
|
-45
|
175
|
97
|
43
|
50
|
7
|
0.69
|
PL-17-081^
|
13175
|
9951
|
-50
|
175
|
140
|
51
|
55
|
4
|
0.93
|
PL-17-083^
|
13175
|
9890
|
-45
|
175
|
100
|
|
|
|
NSA
|
PL-17-085^
|
13175
|
9870
|
-45
|
175
|
101
|
|
|
|
NSA
|
PL-17-086^
|
13075
|
9860
|
-45
|
175
|
101
|
14
|
15
|
1
|
26.90
|
and
|
|
|
|
|
|
44
|
45
|
1
|
5.01
|
PL-17-088^
|
13075
|
9840
|
-45
|
175
|
101
|
|
|
|
NSA
|
|
NSA: No significant
assays; that is, no intervals ≥ 3.0g/t x m.
|
|
^ fire assays of 50g
charge from 1kg pulverized sub-sample split from -2mm crushed
parent of half sawn
1m NQ core. All others are fire assays of 50g charge from 1kg
pulverized sub-sample split from -2mm
crushed parent of whole 1m NQ.
|
True width of the mineralization varies according to the dip of
the host stratigraphy and declination of the relevant drill hole.
For intersections quoted above true width averages approximately
90% of the down-hole width.
Nature of the mineralization:
Mineralization at Egerton MacLean and Hudson occurs within argillites, greywackes
and bedding-parallel quartz veins across the hinge zone and limbs
of the E-W trending Fifteen Mile Stream (FMS) Anticline. The
northern limb of the anticline dips moderately north, with the
southern limb overturned (generally steeply north dipping).
All holes are therefore declined to the south. Highest grades so
far encountered occur within the hinge zone of the anticline.
Mineralization at Plenty is tabular in overall disposition and is
thought to be hosted in a deeper, up-faulted southern limb of the
Fifteen Mile Stream anticline. Free gold is commonly
observed, and in association with pyrrhotite and arsenopyrite.
2. COCHRANE HILL
The Cochrane Hill Gold deposit is located approximately
80km northeast the central milling facility at Touquoy and is
readily accessible by highway. Cochrane Hill's current measured and
indicated mineral resources stand at 10.66 million tonnes at 1.16
g/t Au for 398,000 oz. at 0.35g/t cut-off grade. Inferred
mineral resources amount to 1.63 million tonnes at 1.32 g/t Au for
69,000 oz. at 0.35g/t cut-off grade (see Company announcement
July 21, 2017)1.
The Phase 3 Resource Expansion drilling program at Cochrane Hill
has been completed with 44 holes for 6,900m having been drilled. The Cochrane Hill
deposit is a fairly predictable and continuous tabular body dipping
about 70o to the north with an average true width of
approximately 15-20m. These holes
have been drilled on 25m x
20m centres to test for resource
extensions of this body eastwards and at depth to the
northeast.
Assay results have been received from 18 holes. Strong
mineralization on 3525E (6m @ 9.77g/t
and 5m @ 8.08g/t in CH-17-245 and
CH-17-242 respectively) extends the resource eastwards. Depth
extension is indicated by encouraging results on 3400E
(16m @ 1.70g/t in CH-17-240, with
multiple narrow high grade intervals beneath) with further assay
data pending from adjacent holes at this elevation.
The accompanying cross sections and drilling progress plan can
be viewed here:
Cochrane Hill Gold Project Drill Hole Plan
1 The
Mineral Resource estimate for Cochrane Hill is quoted at a
cut-off grade of 0.35g/t. It has an effective date of July 20, 2017
and was prepared as part of a technical report in accordance with
NI 43-101 by Mr. Neil Schofield, a principal of FSSI (Australia)
Pty Ltd, released on September 1, 2017 on SEDAR.
|
Current results are tabulated below:
Hole id
|
Easting
|
Northing
|
Dip
|
Az.
|
Depth
(m)
|
Significant
Intervals
(≥0.5g/t Au and up to
3m internal
dilution)
|
From
(m)
|
To
(m)
|
Width
(m)
|
Grade
(g/t Au)
|
CH-17-226
|
3350
|
3175
|
60
|
171
|
230
|
156
|
157
|
1
|
11.05
|
and
|
|
|
|
|
|
172
|
175
|
3
|
1.26
|
and
|
|
|
|
|
|
212
|
222
|
10
|
1.78
|
CH-17-240
|
3400
|
3132
|
60
|
171
|
178.5
|
114
|
130
|
16
|
1.70
|
and
|
|
|
|
|
|
137
|
138
|
1
|
22.80
|
and
|
|
|
|
|
|
143
|
144
|
1
|
3.65
|
and
|
|
|
|
|
|
152
|
153
|
1
|
33.90
|
and
|
|
|
|
|
|
158
|
159
|
1
|
50.60
|
CH-17-242
|
3525
|
3150
|
45
|
171
|
151
|
114
|
117
|
3
|
1.13
|
and
|
|
|
|
|
|
133
|
138
|
5
|
8.08
|
incl.
|
|
|
|
|
|
134
|
135
|
1
|
22.6
|
CH-17-243
|
3400
|
3150
|
60
|
171
|
200
|
145
|
149
|
4
|
2.57
|
CH-17-245
|
3525
|
3090
|
45
|
171
|
91
|
70
|
76
|
6
|
9.77
|
incl.
|
|
|
|
|
|
73
|
74
|
1
|
22.00
|
CH-17-247
|
3525
|
3070
|
45
|
171
|
61
|
47
|
54
|
8
|
0.77
|
CH-17-249
|
3525
|
3050
|
45
|
171
|
40
|
25
|
30
|
5
|
1.24
|
and
|
|
|
|
|
|
38
|
39
|
1
|
7.46
|
CH-17-256
|
3550
|
3110
|
45
|
171
|
112
|
67
|
68
|
1
|
19.75
|
|
|
|
|
|
|
85
|
93
|
8
|
0.49
|
CH-17-257
|
3550
|
3150
|
45
|
171
|
151
|
124
|
125
|
1
|
5.79
|
CH-17-258
|
3575
|
3130
|
45
|
171
|
130
|
|
|
|
NSA
|
CH-17-259
|
3575
|
3090
|
45
|
171
|
91
|
82
|
83
|
1
|
3.50
|
CH-17-261
|
3575
|
3050
|
45
|
171
|
40
|
|
|
|
NSA
|
CH-17-262
|
3600
|
3150
|
45
|
171
|
151
|
149
|
150
|
1
|
4.16
|
CH-17-263
|
3575
|
3070
|
45
|
171
|
61
|
|
|
|
NSA
|
CH-17-264
|
3600
|
3130
|
45
|
171
|
130
|
|
|
|
NSA
|
CH-17-265
|
3600
|
3090
|
45
|
171
|
91
|
71
|
72
|
1
|
3.38
|
CH-17-267
|
3600
|
3050
|
45
|
171
|
40
|
|
|
|
NSA
|
CH-17-268
|
3600
|
3070
|
45
|
171
|
61
|
|
|
|
NSA
|
|
NSA: No
significant assays; that is, no intervals ≥ 3.0g/t x m.
|
True width of the mineralization is approximately 75-85% of the
down-hole width depending on dip of the drill hole.
Nature of the mineralization:
The Cochrane Hill deposit is a fairly predictable and continuous
tabular body dipping about 70o to the north with an
average true width of approximately 15-20m. Host rocks are moderately silicified
greywacke and argillite protoliths metamorphosed to upper
amphibolite facies with notable layer-parallel quartz veining. Free
gold is commonly observed, and in association with pyrrhotite and
arsenopyrite.
Technical Disclosure
At Fifteen Mile Stream all assays by default are 50g
charge fire assays of 1kg pulverized sub-sample split from -2mm
crushed parent of whole 1m NQ core,
with 1-in-10 duplicate assays of the same pulp. Where otherwise
noted (^) assays are 50g charge fire assays of 1kg pulverized
sub-sample split from -2mm crushed parent of sawn half 1m NQ core, with 1-in-10 duplicate assays of the
same pulp. Standards and blind blanks are routinely inserted.
Sample preparation and assaying is conducted at the Sudbury and Vancouver laboratories of ALS Canada Ltd, an
entity having no other relationship with the Company. Core
recovery is estimated for each metre and averages >97%,
excluding occasional voids, usually <2m, representing historic underground workings.
Wing samples to voids may be less than 1m to re-establish routine sampling on
1m intervals. Drill core in the
hangingwall of the northern limb of the anticline where adjacent
historic holes very clearly indicate this upper stratigraphy to be
barren may not be sampled and assayed. Standards, blind blanks and
duplicate assay results are acceptable.
At Cochrane Hill all assays by default are 50g charge fire
assays of 1kg pulverized sub-sample split from -2mm crushed parent
of half, sawn 1m NQ core, with
1-in-10 duplicate assays of the same pulp. Standards and blind
blanks are routinely inserted. Sample preparation and assaying is
conducted at the Sudbury and
Vancouver laboratories of ALS
Canada Ltd, an entity having no other relationship with the
Company. Core recovery is estimated for each metre and averages
>98%. Standards, blind blanks and duplicate assay results
are acceptable.
Results and updates from this drilling program will be reported
progressively.
Wally Bucknell, Director of
Exploration to the Company and a Qualified Person as defined by
National Instrument 43-101 ("NI 43-101") has reviewed and approved
the contents of this news release.
Further updates will be provided in due course and as new
results come to hand.
On behalf of the Board of Directors,
Steven Dean
Chairman and Chief Executive Officer
Neither the TSX Venture Exchange nor its Regulation Services
Provider (as that term is defined in the policies of the TSX
Venture Exchange) accepts responsibility for the adequacy or
accuracy of this release.
About Atlantic:
Atlantic is a well-financed, growth-oriented gold development
group with a long term strategy to build a mid-tier gold production
company focused on manageable, executable projects in
mining-friendly jurisdictions.
Atlantic owns Canada's
newest open pit gold mine Moose River Consolidated in Nova Scotia with first gold pour and initial
production achieved in October
2017. Phase 1 Life of Mine production guidance for 2018 is
between 82,000-90,000 oz. gold at All-In-Sustaining-Costs (AISC)
between $CAD675/oz.-$735/oz.
(US$540-588/oz.) as stated in the
Company's news release (January 19,
2018).
The Phase 2 Life of Mine Expansion will have gold production
ramping up to + 200,000 ounces per annum while maintaining the
company's industry lowest quartile cash costs at all-in sustaining
cash cost (AISC) of CAD$692/oz. Au
(USD$555/oz. Au) as stated in the
Company's news release (January 29,
2018).
The company's planned future development of the region will
be based on a central processing facility concept with staged
integration of satellite deposits into the production schedule and
staged capital expenditures for expansion opportunities managed
with cashflow from operations at Touquoy and additional debt
capacity as a long term low cost gold producer.
A Phase 3 expansion is expected to come from success of its
expected extensions of mineralization and definition drilling
program at its FMS and CH deposits, and a regional program
commencing in March 2018
systematically drilling 80kms of prospective structure targeting
the Atlantic model for disseminated style gold deposits amenable to
open pit mining.
Atlantic is committed to the highest standards of
environmental and social responsibility and continually invests in
people and technology to manage risks, maximize outcomes and
returns to all stakeholders.
Forward-Looking Statements:
This release contains certain "forward looking statements"
and certain "forward-looking information" as defined under
applicable Canadian and U.S. securities laws. Forward-looking
statements and information can generally be identified by the use
of forward-looking terminology such as "may", "will", "expect",
"intend", "estimate", "anticipate", "believe", "continue", "plans"
or similar terminology. Forward-looking statements and information
are not historical facts, are made as of the date of this press
release, and include, but are not limited to, statements regarding
discussions of future plans, guidance, projections, objectives,
estimates and forecasts and statements as to management's
expectations with respect to, among other things, the activities
contemplated in this news release and the timing and receipt of
requisite regulatory, and shareholder approvals in respect thereof.
Forward-looking statements in this news release include, without
limitation, statements related to proposed exploration and
development programs, grade and tonnage of material and resource
estimates. These forward looking statements involve numerous risks
and uncertainties and actual results may vary. Important factors
that may cause actual results to vary include without limitation,
the timing and receipt of certain approvals, changes in commodity
and power prices, changes in interest and currency exchange rates,
risks inherent in exploration estimates and results, timing and
success, inaccurate geological and metallurgical assumptions
(including with respect to the size, grade and recoverability of
mineral reserves and resources), changes in development or mining
plans due to changes in logistical, technical or other factors,
unanticipated operational difficulties (including failure of plant,
equipment or processes to operate in accordance with
specifications, cost escalation, unavailability of materials,
equipment and third party contractors, delays in the receipt of
government approvals, industrial disturbances or other job action,
and unanticipated events related to health, safety and
environmental matters), political risk, social unrest, and changes
in general economic conditions or conditions in the financial
markets. In making the forward-looking statements in this press
release, the Company has applied several material assumptions,
including without limitation, the assumptions that: (1) market
fundamentals will result in sustained gold demand and prices; (2)
the receipt of any necessary approvals and consents in connection
with the development of any properties; (3) the availability of
financing on suitable terms for the development, construction and
continued operation of any mineral properties; and (4) sustained
commodity prices such that any properties put into operation remain
economically viable. Information concerning mineral reserve and
mineral resource estimates also may be considered forward-looking
statements, as such information constitutes a prediction of what
mineralization might be found to be present if and when a project
is actually developed. Certain of the risks and assumptions are
described in more detail in the Company's audited financial
statements and MD&A for the year ended December 31, 2016 and for the quarter ended
September 30, 2017 on the SEDAR
website at www.sedar.com. The actual results or performance by the
Company could differ materially from those expressed in, or implied
by, any forward-looking statements relating to those matters.
Accordingly, no assurances can be given that any of the events
anticipated by the forward-looking statements will transpire or
occur, or if any of them do so, what impact they will have on the
results of operations or financial condition of the Company. Except
as required by law, the Company is under no obligation, and
expressly disclaim any obligation, to update, alter or otherwise
revise any forward-looking statement, whether written or oral, that
may be made from time to time, whether as a result of new
information, future events or otherwise, except as may be required
under applicable securities laws.
SOURCE Atlantic Gold Corporation