Magmatic Hosted Heavy Rare Earths Discovered at Nutgrove
Released
Released
Announcement PDF
ASX code:GG1 Contact: Quentin Hill – Managing Director
Web: greengoldminerals.com.au Email: qhill@greengoldminerals.com
1
GREEN & GOLD MINERALS
Magmatic Hosted Heavy Rare Earths Discovered at Nutgrove
➢ Rock chip assays at Nutgrove return:
o 2230 ppm heavy rare earth yttrium oxide (HREYO1) in rhyolite (magmatic)
o 1605 ppm HREYO in a basalt breccia clast (secondary / supergene)
➢ Magmatic rare earth elements (REE) mineralisation identified for the first time in
spherulitic rhyolite.
➢ Heavy rare earths average 59% of total rare earths across all new assays,
confirming that Nutgrove is a heavy rare earth element prospect (HREE).
➢ Continued evidence of mobility of REEs in weathering, supporting the potential for
supergene mineralisation.
➢ REE anomalism is now confirmed over a 3km x 4km area.
Rock chip sampling was conducted during December 2025 and January 2026 and has returned strongly
anomalous heavy rare earth element assays over a broad area within the Nutgrove breccia complex.
Magmatic Heavy Rare Earths Discovery
A rock chip sample of spherulitic rhyolite collected during the recent field program has returned an
assay result of 2,230 ppm HREYO. This represents the highest assay recorded to date from primary
magmatic REE mineralisation at the Nutgrove Project. The sample has been submitted for detailed
petrographic analysis to confirm mineralogy and further assess its origin.
The spherulitic rhyolite sample (GG1RK1011), which returned 2,230 ppm HREYO, is located several
hundred metres east of previously reported high-grade rock chip results. This spatial separation
highlights the potential scale and broader prospectivity of the Nutgrove complex.
Managing Director Quentin Hill commented:
“It is important to have detected the potential hard rock source of the rare earths at the Nutgrove
complex. We have now identified potential for both magmatic rare earths and secondary supergene
mineralisation.
We look forward to conducting further mapping and sampling of the rhyolite, including the spherulitic
phase, to assess the potential for scale, continuity and upgrading of this mineralisation.”
GREEN & GOLD MINERALS LTD
ASX Announcement
3 March 2026
1.
HREYO includes: Dy2O3, Er2O3, Gd2O3, Ho2O3, Lu2O3, Tb4O7, Tm2O3, Y2O3, Yb2O3
ASX code:GG1 Contact: Quentin Hill – Managing Director
Web: greengoldminerals.com.au Email: qhill@greengoldminerals.com
2
GREEN & GOLD MINERALS
Figure 1 Spherulitic rhyolite (sample GG1RK1011) which assayed 2230 ppm HREYO and is interpreted
to be magmatic REE mineralisation.
Secondary (Supergene) Rare Earths
Rock chip sampling of basalt-hosted secondary (supergene) mineralisation has returned further elevated
assay results of up to 1,605 ppm HREYO. Reconnaissance sampling undertaken prior to the Company’s
IPO2 identified values of up to 1.1% HREYO from comparable basalt-hosted secondary mineralisation.
Heavy rare earth supergene minerals, including churchite and xenotime, have previously been identified
within basalt clasts in the Nutgrove breccia. The occurrence of these minerals indicates that REEs have
been mobilised, most likely through weathering and/or hydrothermal processes. Such mobility is
considered a positive indicator for the potential development of supergene and/or ionic clay-hosted REE
mineralisation.
2 GG1 Prospectus https://www.greengoldminerals.com.au/investors/asx-announcements/.
ASX code:GG1 Contact: Quentin Hill – Managing Director
Web: greengoldminerals.com.au Email: qhill@greengoldminerals.com
3
GREEN & GOLD MINERALS
Figure 2 Left: basalt clast from within a polymict breccia containing secondary (supergene) heavy rare
earth minerals churchite and xenotime: sample collected in 2023. Right: reflected light microscope
photo of churchite in a void within a vesicular basalt breccia clast from the same sample.
The Nutgrove Complex
The Nutgrove Complex comprises an approximately 4 km by 3 km area of breccias and Cenozoic rhyolite
flows characterised by a prominent radiometric signature. Cenozoic intrusive systems along the east
coast of Australia are recognised hosts to magmatic REE mineralisation. A notable example is the Toongi
deposit near Dubbo, NSW, which hosts a Measured and Inferred JORC Resource of 74 Mt at 0.74% TREO,
0.14% Y₂O₃, 1.89% ZrO₂, 0.04% HfO₂, 0.44% Nb₂O₅ and 0.03% Ta₂O₅3.
Geologically, the Nutgrove Complex is interpreted as a
diatreme breccia system approximately 4 km by 3 km in
extent, comprising breccias and layered pyroclastic units
associated with rhyolitic intrusives. The breccias are
overlain by late-stage, flow-banded rhyolite that forms
local topographic highs.
The Nutgrove breccia complex coincides with a total count
radiometric anomaly, appearing white on ternary
radiometric imagery (Figure 5 – left). The overlying flow-
banded rhyolite was observed in the field to be strongly
magnetic and corresponds with magnetic highs on the
Total Magnetic Intensity (TMI) image (Figure 5 – right). In
contrast, the breccias, despite containing a significant
rhyolite component, are generally demagnetised and
correlate with magnetic lows on the TMI image.
The project is located 50km north of Toowoomba, in south east Queensland.
3
Resources & Reserves - Australian Strategic Materials Ltd (ASM)
Figure 3 Nutgrove location plan
ASX code:GG1 Contact: Quentin Hill – Managing Director
Web: greengoldminerals.com.au Email: qhill@greengoldminerals.com
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GREEN & GOLD MINERALS
Figure 4 Rock chip assays over satellite image. HREYO includes: Dy2O3, Er2O3, Gd2O3, Ho2O3,
Lu2O3, Tb4O7, Tm2O3, Y2O3, Yb2O3 (GDA 2020, Zone 56)
Figure 5 Left: rock chips over ternary radiometric. The prospective Nutgrove breccia complex
corresponds with a total count radiometric anomaly (white). Right: rock chips over TMI magnetics.
HREYO includes Dy2O3, Er2O3, Gd2O3, Ho2O3, Lu2O3, Tb4O7, Tm2O3, Y2O3, Yb2O3 (GDA 2020, Zone 56)
ASX code:GG1 Contact: Quentin Hill – Managing Director
Web: greengoldminerals.com.au Email: qhill@greengoldminerals.com
5
GREEN & GOLD MINERALS
Breccias typically comprise clasts of rhyolite and vesicular basalt, with occasional basement gneiss
fragments, set within a fine-grained matrix of milled rhyolite (Figure 6). The rhyolite phase is anomalous
in heavy rare earth elements (HREEs) throughout the Nutgrove Complex.
The Nutgrove breccia is locally strongly altered, with mobile elements removed and skeletal silica
textures preserved.
Figure 6 Left: Pyroclastic breccia assaying 405 ppm HREYO (sample GGN2601). Right: Polymict milled
breccia of basement gneiss & amphibolite, vesicular basalt and rhyolite (not sampled).
GG1 was granted the Nutgrove tenement in 2023 as part of a broader tenement application strategy
targeting magmatic rare earths. The Nutgrove complex had not been explored for REEs prior to GG1’s
involvement. Reconnaissance rock chip sampling completed prior to IPO returned assays of up to 1.4%
TREYO, confirming the prospectivity of the complex. Nutgrove remains at an early stage of exploration.
Next Steps
An update to the mineral resource estimate is underway at the Chillagoe Gold Project.
Drilling at the Chillagoe Gold Project is scheduled to commence in late April / May 2026.
Drill site identification at the Herberton Mineral Field project is planned to commence subject to approval
of the acquisition at an EGM scheduled for late March 2026.
On ground investigations will resume at Nutgrove from April 2026 after petrographic results for sample
GG1RK1011 are received.
This announcement was approved for release by the board of Green & Gold Minerals Ltd.
ASX code:GG1 Contact: Quentin Hill – Managing Director
Web: greengoldminerals.com.au Email: qhill@greengoldminerals.com
6
GREEN & GOLD MINERALS
Rock Chip Assays: Blue shaded columns represent elements used to calculate HREO+Y. Coordinates in UTM GDA2020, zone 56.
Sample Easting Northing Description TREYO HREYO HREYO CeO2 Dy2O3 Er2O3 Eu2O3 Gd2O3 Ho2O3 La2O3 Lu2O3 Nd2O3 Pr6O11 Sm2O3 Tb4O7 Tm2O3 Y2O3 Yb2O3 Ga2O3
ppm ppm % ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm
GG1 RK1001 374607 7005650 Basalt clast in breccia 263 78 30% 86 8 4 3 10 1 33 0 43 10 10 2 0 49 3 22
GG1 RK1002 374626 7005836 Basalt clast in breccia 365 137 38% 102 13 7 4 15 3 40 1 55 13 15 2 1 88 6 24
GG1 RK1003 374570 7005805 Basalt clast in breccia 524 233 45% 126 22 12 4 23 4 48 2 75 17 21 4 1 155 10 25
GG1 RK1004 374472 7005849 Clastic 326 216 66% 50 20 12 1 15 4 14 2 27 6 11 3 2 145 14 39
GG1 RK1005 374439 7005947
Andesite clast in
breccia 2,931 1,605 55% 195 253 112 8 312 41 119 19 534 92 379 51 18 653 145 27
GG1 RK1006 374257 7006043 Basalt clast in breccia 441 199 45% 98 20 11 4 22 4 39 1 65 14 22 4 2 124 10 24
GG1 RK1007 374262 7006056 Basalt clast in breccia 473 175 37% 129 18 9 5 18 3 55 1 73 17 18 3 1 113 8 25
GG1 RK1008 374205 7006020 Volcanoclastic 353 274 78% 28 25 16 0 19 5 5 3 24 5 16 4 3 182 18 54
GG1 RK1009 374330 7005718 Layered obsidian 389 317 82% 32 24 17 0 16 5 6 3 18 4 11 4 3 227 19 52
GG1 RK1010 374331 7005674 Breccia 640 233 36% 181 23 12 7 25 5 70 1 101 24 24 4 2 151 10 23
GG1 RK1011 374856 7005117 Spherulitic Rhyolite 3,298 2,230 68% 733 192 137 1 107 41 62 23 154 36 83 27 22 1,516 165 53
GG1 RK1012 374861 7005118 Obsidian in clastic 652 402 62% 36 41 21 0 39 7 52 3 98 24 40 7 3 259 22 49
GG1 RK1013 374936 7005116 Obsidian 407 320 79% 27 27 18 - 19 6 9 3 28 7 16 4 3 219 21 49
GG1 RK1014 374752 7005148 Fine white clastic 374 276 74% 43 22 15 0 15 4 12 3 26 6 12 3 2 193 18 48
GGN2601 374873 7005859 Coarse Volcanoclastic 500 405 81% 32 33 23 0 23 7 18 3 26 6 12 5 3 285 23 49
GGN2602 374925 7005873 Altered rhyolite 145 101 70% 16 11 8 - 7 2 8 1 12 3 6 2 1 61 8 48
GGN2603 375319 7005846 Clastic of rhyolite 163 128 78% 15 11 8 0 8 3 6 1 8 2 4 2 1 85 9 62
GGN2604 375564 7005947 Obsidian, iron stained 143 103 72% 16 9 6 - 7 2 6 1 10 3 5 1 1 68 8 53
GGN2605 375914 7006882 Soft altered breccia 285 191 67% 39 16 11 0 14 4 15 2 24 6 9 3 2 127 12 45
GGN2606 375986 7006943 Polymict breccia 468 144 31% 137 16 8 5 18 3 66 1 77 20 19 3 1 87 7 28
GGN2607 375894 7006974 Breccia matrix 298 190 64% 46 16 11 1 14 4 18 2 27 7 11 3 2 127 12 38
GGN2608 375852 7007013 Breccia 285 187 65% 41 16 11 0 13 4 16 1 25 6 10 3 2 124 12 38
GGN2609 375997 7007325 Basaltic breccia 274 77 28% 85 9 5 4 11 2 38 0 48 11 12 2 1 45 4 27
GGN2610 376342 7007073 Polymict breccia 393 280 71% 44 24 17 0 18 5 17 2 30 7 14 4 3 190 17 46
GGN2611 376345 7007072
Obsidian cut by thin
veins 310 211 68% 39 18 13 - 15 4 16 2 27 7 10 3 2 140 14 48
GGN2612 376345 7007072
Obsidian cut by thin
veins 360 257 71% 43 22 16 - 16 5 16 2 27 7 12 4 2 172 17 49
GGN2613 376036 7007303 Soil in road cutting 181 57 31% 55 6 4 2 6 1 27 1 27 7 6 1 0 35 4 17
ASX code:GG1 Contact: Quentin Hill – Managing Director
Web: greengoldminerals.com.au Email: qhill@greengoldminerals.com
7
GREEN & GOLD MINERALS
About the Chillagoe Gold Project:
The Chillagoe Gold Project is located 25km
northwest of Chillagoe in north Queensland
adjacent to the significant Red Dome and
Mungana gold deposits. The project contains an
inferred JORC Resource1 of 32koz Au and
387koz Ag at 1.1g/t Au and 13 g/t Ag within
granted mining leases at Wandoo.
Drilling at Mt Wandoo recently returned strong
drill results and the deposit remains open along
strike and at depth.
The Company has a dual focus of extending the
Wandoo resource in preparation for mining
studies, while exploring for new discoveries in the
Mungana porphyry cluster.
About the Herberton Mineral Field Project (acquisition subject to shareholder approval):
The project is situated in a prolific historic mining
area located 100km west of Cairns, QLD. The
project lies within the Cu-Ag-Sn-In dominant zone,
elements that are leveraged to future facing
electrification and AI data centre metal demand.
The tenements are unexplored in the modern era
and have high discovery potential.
The Company plans to emulate the success of
neighbouring explorers that have recently
delineated large resources from the prolific
mineral occurrences found across this region.
ASX code:GG1 Contact: Quentin Hill – Managing Director
Web: greengoldminerals.com.au Email: qhill@greengoldminerals.com
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GREEN & GOLD MINERALS
COMPETENT PERSON’S STATEMENT
The information in this Announcement that relates to Exploration Targets and Exploration Results is based upon work
undertaken by Mr Quentin Hill who is a Member of the Australasian Institute of Geoscientists (AIG). Mr Hill has sufficient
experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he
is undertaking to qualify as a ‘Competent Person’ as defined in the 2012 Edition of the ‘Australasian Code for Reporting of
Exploration Results, Mineral Resources and Ore Reserves’ (JORC Code). Mr Hill is an employee of Green & Gold Minerals
and consents to the inclusion in the report of the matters based on their information in the form and context in which it
appears.
The information that relates to Mineral Resources was previously reported by the Company in its Prospectus, a copy of
which is available on the Company’s website at https://www.greengoldminerals.com.au/investors/asx-announcements/.
The Company is not aware of any new information or data that materially affects the information included in this
announcement and that all material assumptions and technical parameters underpinning the estimates continue to apply
and have not material changed. The Company confirms that the form and context in which the Competent Person’s findings
are presented have not been materially modified from the original market announcement.
JORC Table 1
Section 1 Sampling Techniques and Data
Criteria JORC Code explanation Commentary
Sampling
techniques
• Nature and quality of sampling (eg cut
channels, random chips, or specific
specialised industry standard
measurement tools appropriate to the
minerals under investigation, such as
down hole gamma sondes, or handheld
XRF instruments, etc). These examples
should not be taken as limiting the broad
meaning of sampling.
• Include reference to measures taken to
ensure sample representivity and the
appropriate calibration of any
measurement tools or systems used.
• Aspects of the determination of
mineralisation that are Material to the
Public Report.
• In cases where ‘industry standard’ work
has been done this would be relatively
simple.
Rock chip samples were taken as point measurements and are not
representative of the average grade of mineralisation.
Drilling
techniques
• Drill type (eg core, reverse circulation,
open-hole hammer, rotary air blast,
auger, Bangka, sonic, etc) and details
(eg core diameter, triple or standard
tube, depth of diamond tails, face-
sampling bit or other type, whether core
is oriented and if so, by what method,
etc).
No drilling has been conducted.
Drill sample
recovery
• Method of recording and assessing core
and chip sample recoveries and results
assessed.
• Measures taken to maximise sample
recovery and ensure representative
nature of the samples.
• Whether a relationship exists between
sample recovery and grade and whether
sample bias may have occurred due to
preferential loss/gain of fine/coarse
material.
N/A
Logging • Whether core and chip samples have
been geologically and geotechnically
logged to a level of detail to support
appropriate Mineral Resource
estimation, mining studies and
metallurgical studies.
N/A
ASX code:GG1 Contact: Quentin Hill – Managing Director
Web: greengoldminerals.com.au Email: qhill@greengoldminerals.com
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GREEN & GOLD MINERALS
Criteria JORC Code explanation Commentary
• Whether logging is qualitative or
quantitative in nature. Core (or costean,
channel, etc) photography.
• The total length and percentage of the
relevant intersections logged.
Sub-sampling
techniques and
sample
preparation
• If core, whether cut or sawn and whether
quarter, half or all core taken.
• If non-core, whether riffled, tube
sampled, rotary split, etc and whether
sampled wet or dry.
• For all sample types, the nature, quality
and appropriateness of the sample
preparation technique.
• Quality control procedures adopted for
all sub-sampling stages to maximise
representivity of samples.
• Measures taken to ensure that the
sampling is representative of the in situ
material collected, including for instance
results for field duplicate/second-half
sampling.
• Whether sample sizes are appropriate to
the grain size of the material being
sampled.
Rock chip samples were pulverised at the lab and a subsample was split
for assay using industry standard procedures.
Quality of assay
data and
laboratory tests
• The nature, quality and appropriateness
of the assaying and laboratory
procedures used and whether the
technique is considered partial or total.
• For geophysical tools, spectrometers,
handheld XRF instruments, etc, the
parameters used in determining the
analysis including instrument make and
model, reading times, calibrations
factors applied and their derivation, etc.
• Nature of quality control procedures
adopted (eg standards, blanks,
duplicates, external laboratory checks)
and whether acceptable levels of
accuracy (ie lack of bias) and precision
have been established.
Assays were conducted by Intertek using FB6 fusion assay, considered to
be a total assay for rare earth elements.
Control standards were inserted in the assay batch by Intertek. No failed
standards were reported.
Verification of
sampling and
assaying
• The verification of significant
intersections by either independent or
alternative company personnel.
• The use of twinned holes.
• Documentation of primary data, data
entry procedures, data verification, data
storage (physical and electronic)
protocols.
No external verification of assays has been conducted. The results are
consistent with previous assay results. Lab inserted QAQC standards were
within acceptable variability limits.
Location of data
points
• Accuracy and quality of surveys used to
locate drill holes (collar and down-hole
surveys), trenches, mine workings and
other locations used in Mineral
Resource estimation.
• Specification of the grid system used.
• Quality and adequacy of topographic
control.
Sample point locations were recorded by hand held GPS, which has
accuracy of approximately +/- 5m in both easting and northing.
Data spacing
and distribution
• Data spacing for reporting of Exploration
Results.
• Whether the data spacing and
distribution is sufficient to establish the
degree of geological and grade
continuity appropriate for the Mineral
Resource and Ore Reserve estimation
procedure(s) and classifications applied.
• Whether sample compositing has been
applied.
The distribution of sample points was related primarily to accessibility and
are not representative of the abundance of any rock type or feature. Rock
chip data will not be used for the estimation of resources.
Further mapping and sampling work is required to determine the
continuity and grade of various rock types.
Orientation of
data in relation
to geological
structure
• Whether the orientation of sampling
achieves unbiased sampling of possible
structures and the extent to which this is
known, considering the deposit type.
• If the relationship between the drilling
orientation and the orientation of key
mineralised structures is considered to
have introduced a sampling bias, this
The orientation and thickness of the geological formations sampled are
currently unknown.
ASX code:GG1 Contact: Quentin Hill – Managing Director
Web: greengoldminerals.com.au Email: qhill@greengoldminerals.com
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GREEN & GOLD MINERALS
Criteria JORC Code explanation Commentary
should be assessed and reported if
material.
Sample security • The measures taken to ensure sample
security.
Samples were couriered to the lab via commercial courier. There were no
security breaches detected.
Audits or
reviews
• The results of any audits or reviews of
sampling techniques and data.
No audits have been undertaken.
Section 2 Reporting of Exploration Results
Criteria JORC Code explanation Commentary
Mineral
tenement and
land tenure
status
• Type, reference name/number,
location and ownership including
agreements or material issues with third
parties such as joint ventures, partnerships,
overriding royalties, native title interests,
historical sites, wilderness or national park
and environmental settings.
• The security of the tenure held at
the time of reporting along with any known
impediments to obtaining a licence to
operate in the area.
Results are reported from solely within EPM28000. This tenement is 100%
held by Green & Gold Minerals Ltd. There are no royalties or joint venture
agreements in place.
The tenement is in good standing with regard to meeting exploration
commitments and reporting.
The ability to operate is subject to customary landholder and cultural
heritage notification and permission processes.
Exploration
done by other
parties
• Acknowledgment and appraisal of
exploration by other parties.
GG1 is not aware of any prior exploration for rare earths within
EPM28000.
Geology • Deposit type, geological setting
and style of mineralisation.
The Nutgrove complex is a Cenozoic intrusive complex consisting of
diatreme breccias overlain in part by flow banded rhyolite. See the body of
the announcement for further geological context.
Drill hole
Information
• A summary of all information
material to the understanding of the
exploration results including a tabulation of
the following information for all Material drill
holes:
o easting and northing of the drill
hole collar
o elevation or RL (Reduced Level –
elevation above sea level in metres) of the
drill hole collar
o dip and azimuth of the hole
o down hole length and interception
depth
o hole length.
N/A
Data
aggregation
methods
• In reporting Exploration Results,
weighting averaging techniques, maximum
and/or minimum grade truncations (eg
cutting of high grades) and cut-off grades
are usually Material and should be stated.
• Where aggregate intercepts
incorporate short lengths of high grade
results and longer lengths of low grade
results, the procedure used for such
aggregation should be stated and some
typical examples of such aggregations
should be shown in detail.
• The assumptions used for any
reporting of metal equivalent values should
be clearly stated.
HREYO is reported inclusive of: Dy2O3, Er2O3, Gd2O3, Ho2O3, Lu2O3, Tb4O7,
Tm2O3, Y2O3, Yb2O3
Conversion factors used to convert to oxide:
Relationship
between
mineralisation
widths and
intercept
lengths
• These relationships are particularly
important in the reporting of Exploration
Results.
• If the geometry of the
mineralisation with respect to the drill hole
angle is known, its nature should be
reported.
• If it is not known and only the down
hole lengths are reported, there should be a
clear statement to this effect (eg ‘down hole
length, true width not known’).
N/A
Diagrams • Appropriate maps and sections
(with scales) and tabulations of intercepts
should be included for any significant
discovery being reported These should
A map of the location of rock chip results is provided in the body of the
announcement.
ASX code:GG1 Contact: Quentin Hill – Managing Director
Web: greengoldminerals.com.au Email: qhill@greengoldminerals.com
11
GREEN & GOLD MINERALS
Criteria JORC Code explanation Commentary
include, but not be limited to a plan view of
drill hole collar locations and appropriate
sectional views.
Balanced
reporting
• Where comprehensive reporting of
all Exploration Results is not practicable,
representative reporting of both low and
high grades and/or widths should be
practiced to avoid misleading reporting of
Exploration Results.
All new rock chip assay results are reported in this announcement. All rock
chip assay results are shown on maps in this announcement.
Other
substantive
exploration
data
• Other exploration data, if
meaningful and material, should be
reported including (but not limited to):
geological observations; geophysical survey
results; geochemical survey results; bulk
samples – size and method of treatment;
metallurgical test results; bulk density,
groundwater, geotechnical and rock
characteristics; potential deleterious or
contaminating substances.
Nil
Further work • The nature and scale of planned
further work (eg tests for lateral extensions
or depth extensions or large-scale step-out
drilling).
• Diagrams clearly highlighting the
areas of possible extensions, including the
main geological interpretations and future
drilling areas, provided this information is
not commercially sensitive.
Further work will assess the distribution and grade of the prospective
spherulitic rhyolite phase.
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