Document:

Exhibit 10.1

AMENDMENT
TO ARRANGEMENT AND MERGER AGREEMENT

THIS AGREEMENT made as of the 8th day of May, 2007

AMONG:

VISTA GOLD
CORP., a company
existing under the laws of the Yukon Territory with an address at Suite 5 -
7961 Shaffer Parkway, Littleton, Colorado, USA, 80127,

(“Vista”)

AND:

ALLIED
NEVADA GOLD CORP., a
corporation existing under the laws of Delaware with an address at 1380 Greg
Street, Suite 203, Sparks, Nevada, USA, 89431,

(“Newco”)

AND:

CARL PESCIO, an individual with an address at P.O. Box 5831, Elko, Nevada, USA,
89802,

(“Carl”)

AND:

JANET PESCIO, an individual with an address at P.O. Box 5831, Elko, Nevada, USA,
89802,

(“Janet”, and together with Carl, the “Pescios”)

WITNESSES THAT WHEREAS:

A.                                   Vista, Newco, Carl and Janet are parties to an
arrangement and merger agreement made as of September 22, 2006 (the “Original Agreement”); and

B.                                     the parties hereto wish to amend the Original
Agreement to add (i) certain additional unpatented mining claims to Schedule B
to the Original Agreement, such additional claims to form part of the “Vista
Nevada Assets” as defined in the Original Agreement and (ii) certain additional
unpatented mining claims to Schedule C to the Original Agreement, such
additional claims to form part of the “Pescio Nevada Assets” as defined in the
Original Agreement;

NOW
THEREFORE, in consideration of the mutual agreements and covenants contained
herein and other good and valuable consideration, the receipt and sufficiency
of which is hereby acknowledge by all a parties, the parties agree as follows:

1.             Schedule
B of the Original Agreement is hereby amended as follows:

The
following claims are added under the heading “Hycroft Resources &
Development, Inc.”:

Hycroft
Mine, Humboldt County, Nevada

	
  Claim Names

  	
   

  	
  BLM Serial No. (NMC)

  	
   

  	
  Humbolt County Document #

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 223 thru FG
  226

  	
   

  	
  NMC 939256 thru 939259

  	
   

  	
  #2006-7900 thru 2006-7903

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 270 thru FG
  275

  	
   

  	
  NMC 939291 thru 939296

  	
   

  	
  #2006-7904 thru 2006-7909

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 319 thru FG
  324

  	
   

  	
  NMC 939332 thru 939337

  	
   

  	
  #2006-7910 thru 2006-7915

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 368 thru FG
  377

  	
   

  	
  NMC 939373 thru 939382

  	
   

  	
  #2006-7916 thru 2006-7925

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 421 thru FG
  433

  	
   

  	
  NMC 939426 thru 939438

  	
   

  	
  #2006-7926 thru 2006-7938

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
  NFG 1 thru NFG
  74

  	
   

  	
  NMC 939506 thru 939579

  	
   

  	
  #2006-7940 thru 2006-8013

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
  NFG 76 thru NFG
  187

  	
   

  	
  NMC 939580 thru 939691

  	
   

  	
  #2006-8014 thru 2006-8125

  

 

The
following claims are added under the heading “Hycroft Resources &
Development, Inc. — Hycroft Mine, Pershing
County, Nevada”:

	
  Claim Names

  	
   

  	
  BLM Serial No. (NMC)

  	
   

  	
  Pershing County

  
	
   

  	
   

  	
   

  	
   

  	
  Book

  	
   

  	
  Page

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 1 thru FG 82

  	
   

  	
  NMC 939059 thru 939140

  	
   

  	
  415

  	
   

  	
  360 thru 441

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 84 thru FG
  116

  	
   

  	
  NMC 939141 thru 939173

  	
   

  	
  415

  	
   

  	
  442 thru 474

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 121 thru FG
  127

  	
   

  	
  NMC 939174 thru 939180

  	
   

  	
  415

  	
   

  	
  475 thru 481

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 130 thru FG
  162

  	
   

  	
  NMC 939181 thru 939213

  	
   

  	
  415

  	
   

  	
  482 thru 514

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 164 thru FG
  167

  	
   

  	
  NMC 939214 thru 939217

  	
   

  	
  415

  	
   

  	
  515 thru 518

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 173 thru FG
  202

  	
   

  	
  NMC 939218 thru 939247

  	
   

  	
  415

  	
   

  	
  519 thru 548

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 215 thru FG
  222

  	
   

  	
  NMC 939248 thru 939255

  	
   

  	
  415

  	
   

  	
  549 thru 556

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 226 thru FG
  249

  	
   

  	
  NMC 939259 thru 939282

  	
   

  	
  415

  	
   

  	
  557 thru 580

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 262 thru FG
  269

  	
   

  	
  NMC 939283 thru 939290

  	
   

  	
  415

  	
   

  	
  581 thru 588

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 275 thru FG
  302

  	
   

  	
  NMC 939296 thru 939323

  	
   

  	
  415

  	
   

  	
  589 thru 616

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 311 thru FG
  318

  	
   

  	
  NMC 939323 thru 939331

  	
   

  	
  415

  	
   

  	
  617 thru 624

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 324 thru FG
  351

  	
   

  	
  NMC 939337 thru 939364

  	
   

  	
  415

  	
   

  	
  625 thru 652

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 360 thru FG
  366

  	
   

  	
  NMC 939365 thru 939371

  	
   

  	
  415

  	
   

  	
  653 thru 659

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 367

  	
   

  	
  NMC 939372

  	
   

  	
  415

  	
   

  	
  661

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 377

  	
   

  	
  NMC 393382

  	
   

  	
  415

  	
   

  	
  660

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 378 thru FG
  420

  	
   

  	
  NMC 939383 thru 939425

  	
   

  	
  415

  	
   

  	
  662 thru 703A

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 433 thru FG
  500

  	
   

  	
  NMC 939425 thru 939505

  	
   

  	
  415

  	
   

  	
  704 thru 771

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  WCX 5 thru WCX
  10

  	
   

  	
  NMC 941257 thru 941262

  	
   

  	
  416

  	
   

  	
  591 thru 596

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  WCX 34 thru WCX
  58

  	
   

  	
  NMC 941263 thru 941287

  	
   

  	
  416

  	
   

  	
  597 thru 621

  

 

 2
 

2.             Schedule C of the Original
Agreement is hereby amended as follows:

The
following claims are added under the heading “Stargo Property — Nye County —
Claim Names”:

ST 258 - 337

3.                                        The Original Agreement as hereby amended
shall continue in full force and effect and the provisions of the Original
Agreement, as hereby amended, are ratified and confirmed in all respects.

4.                                        This Agreement and the Original Agreement
shall be read and construed together as if they constituted one document,
provided that if there is any inconsistency between the Original Agreement and
the provisions of this Agreement, the provisions of this Amending Agreement
shall govern.

5.                                        This Agreement may be executed in any number
of original or facsimile counterparts each of which shall be deemed to be an
original, but all of which together shall constitute one and the same document.

REMAINDER OF PAGE INTENTIONALLY LEFT BLANK

 3
 

IN
WITNESS WHEREOF the parties have executed this Agreement as of the date first
above written.

	
  VISTA GOLD CORP.

  	
   

  
	
   

  	
   

  
	
  By:

  	
  /s/ Michael B. Richings

  	
   

  
	
   

  	
  Authorized Signatory

  
	
   

  	
   

  
	
  ALLIED
  NEVADA GOLD CORP.

  	
   

  
	
   

  	
   

  
	
  By:

  	
  /s/ Scott A. Caldwell

  	
   

  
	
   

  	
  Authorized Signatory

  
	
   

  	
   

  
	
  SIGNED,
  SEALED AND DELIVERED by

  	
  )

  	
   

  
	
  Carl
  Pescio in the presence of:

  	
  )

  	
   

  
	
   

  	
  )

  	
   

  
	
  Elizabeth Nunez

  	
   

  	
  )

  	
  /s/ Carl Pescio

  	
   

  
	
  Name of Witness

  	
  )

  	
  CARL PESCIO

  
	
   

  	
  )

  	
   

  
	
  /s/ Elizabeth
  Nunez

  	
   

  	
  )

  	
   

  
	
  Signature of
  Witness

  	
  )

  	
   

  
	
   

  	
   

  	
   

  
	
  SIGNED,
  SEALED AND DELIVERED by

  	
  )

  	
   

  
	
  Janet
  Pescio in the presence of:

  	
  )

  	
   

  
	
   

  	
  )

  	
   

  
	
  Elizabeth Nunez

  	
   

  	
  )

  	
  /s/ Janet Pescio

  	
   

  
	
  Name of Witness

  	
  )

  	
  JANET PESCIO

  
	
   

  	
  )

  	
   

  
	
  /s/ Elizabeth
  Nunez

  	
   

  	
  )

  	
   

  
	
  Signature of
  Witness

  	
  )

  	
   

  
								

 

 4Exhibit 10.1

AMENDMENT
TO ARRANGEMENT AND MERGER AGREEMENT

THIS AGREEMENT made as of the 8th day of May, 2007

AMONG:

VISTA GOLD
CORP., a company
existing under the laws of the Yukon Territory with an address at Suite 5 -
7961 Shaffer Parkway, Littleton, Colorado, USA, 80127,

(“Vista”)

AND:

ALLIED
NEVADA GOLD CORP., a
corporation existing under the laws of Delaware with an address at 1380 Greg
Street, Suite 203, Sparks, Nevada, USA, 89431,

(“Newco”)

AND:

CARL PESCIO, an individual with an address at P.O. Box 5831, Elko, Nevada, USA,
89802,

(“Carl”)

AND:

JANET PESCIO, an individual with an address at P.O. Box 5831, Elko, Nevada, USA,
89802,

(“Janet”, and together with Carl, the “Pescios”)

WITNESSES THAT WHEREAS:

A.                                   Vista, Newco, Carl and Janet are parties to an
arrangement and merger agreement made as of September 22, 2006 (the “Original Agreement”); and

B.                                     the parties hereto wish to amend the Original
Agreement to add (i) certain additional unpatented mining claims to Schedule B
to the Original Agreement, such additional claims to form part of the “Vista
Nevada Assets” as defined in the Original Agreement and (ii) certain additional
unpatented mining claims to Schedule C to the Original Agreement, such
additional claims to form part of the “Pescio Nevada Assets” as defined in the
Original Agreement;

NOW
THEREFORE, in consideration of the mutual agreements and covenants contained
herein and other good and valuable consideration, the receipt and sufficiency
of which is hereby acknowledge by all a parties, the parties agree as follows:

1.             Schedule
B of the Original Agreement is hereby amended as follows:

The
following claims are added under the heading “Hycroft Resources &
Development, Inc.”:

Hycroft
Mine, Humboldt County, Nevada

	
  Claim Names

  	
   

  	
  BLM Serial No. (NMC)

  	
   

  	
  Humbolt County Document #

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 223 thru FG
  226

  	
   

  	
  NMC 939256 thru 939259

  	
   

  	
  #2006-7900 thru 2006-7903

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 270 thru FG
  275

  	
   

  	
  NMC 939291 thru 939296

  	
   

  	
  #2006-7904 thru 2006-7909

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 319 thru FG
  324

  	
   

  	
  NMC 939332 thru 939337

  	
   

  	
  #2006-7910 thru 2006-7915

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 368 thru FG
  377

  	
   

  	
  NMC 939373 thru 939382

  	
   

  	
  #2006-7916 thru 2006-7925

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 421 thru FG
  433

  	
   

  	
  NMC 939426 thru 939438

  	
   

  	
  #2006-7926 thru 2006-7938

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
  NFG 1 thru NFG
  74

  	
   

  	
  NMC 939506 thru 939579

  	
   

  	
  #2006-7940 thru 2006-8013

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
  NFG 76 thru NFG
  187

  	
   

  	
  NMC 939580 thru 939691

  	
   

  	
  #2006-8014 thru 2006-8125

  

 

The
following claims are added under the heading “Hycroft Resources &
Development, Inc. — Hycroft Mine, Pershing
County, Nevada”:

	
  Claim Names

  	
   

  	
  BLM Serial No. (NMC)

  	
   

  	
  Pershing County

  
	
   

  	
   

  	
   

  	
   

  	
  Book

  	
   

  	
  Page

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 1 thru FG 82

  	
   

  	
  NMC 939059 thru 939140

  	
   

  	
  415

  	
   

  	
  360 thru 441

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 84 thru FG
  116

  	
   

  	
  NMC 939141 thru 939173

  	
   

  	
  415

  	
   

  	
  442 thru 474

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 121 thru FG
  127

  	
   

  	
  NMC 939174 thru 939180

  	
   

  	
  415

  	
   

  	
  475 thru 481

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 130 thru FG
  162

  	
   

  	
  NMC 939181 thru 939213

  	
   

  	
  415

  	
   

  	
  482 thru 514

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 164 thru FG
  167

  	
   

  	
  NMC 939214 thru 939217

  	
   

  	
  415

  	
   

  	
  515 thru 518

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 173 thru FG
  202

  	
   

  	
  NMC 939218 thru 939247

  	
   

  	
  415

  	
   

  	
  519 thru 548

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 215 thru FG
  222

  	
   

  	
  NMC 939248 thru 939255

  	
   

  	
  415

  	
   

  	
  549 thru 556

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 226 thru FG
  249

  	
   

  	
  NMC 939259 thru 939282

  	
   

  	
  415

  	
   

  	
  557 thru 580

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 262 thru FG
  269

  	
   

  	
  NMC 939283 thru 939290

  	
   

  	
  415

  	
   

  	
  581 thru 588

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 275 thru FG
  302

  	
   

  	
  NMC 939296 thru 939323

  	
   

  	
  415

  	
   

  	
  589 thru 616

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 311 thru FG
  318

  	
   

  	
  NMC 939323 thru 939331

  	
   

  	
  415

  	
   

  	
  617 thru 624

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 324 thru FG
  351

  	
   

  	
  NMC 939337 thru 939364

  	
   

  	
  415

  	
   

  	
  625 thru 652

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 360 thru FG
  366

  	
   

  	
  NMC 939365 thru 939371

  	
   

  	
  415

  	
   

  	
  653 thru 659

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 367

  	
   

  	
  NMC 939372

  	
   

  	
  415

  	
   

  	
  661

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 377

  	
   

  	
  NMC 393382

  	
   

  	
  415

  	
   

  	
  660

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 378 thru FG
  420

  	
   

  	
  NMC 939383 thru 939425

  	
   

  	
  415

  	
   

  	
  662 thru 703A

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FG 433 thru FG
  500

  	
   

  	
  NMC 939425 thru 939505

  	
   

  	
  415

  	
   

  	
  704 thru 771

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  WCX 5 thru WCX
  10

  	
   

  	
  NMC 941257 thru 941262

  	
   

  	
  416

  	
   

  	
  591 thru 596

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  WCX 34 thru WCX
  58

  	
   

  	
  NMC 941263 thru 941287

  	
   

  	
  416

  	
   

  	
  597 thru 621

  

 

 2
 

2.             Schedule C of the Original
Agreement is hereby amended as follows:

The
following claims are added under the heading “Stargo Property — Nye County —
Claim Names”:

ST 258 - 337

3.                                        The Original Agreement as hereby amended
shall continue in full force and effect and the provisions of the Original
Agreement, as hereby amended, are ratified and confirmed in all respects.

4.                                        This Agreement and the Original Agreement
shall be read and construed together as if they constituted one document,
provided that if there is any inconsistency between the Original Agreement and
the provisions of this Agreement, the provisions of this Amending Agreement
shall govern.

5.                                        This Agreement may be executed in any number
of original or facsimile counterparts each of which shall be deemed to be an
original, but all of which together shall constitute one and the same document.

REMAINDER OF PAGE INTENTIONALLY LEFT BLANK

 3
 

IN
WITNESS WHEREOF the parties have executed this Agreement as of the date first
above written.

	
  VISTA GOLD CORP.

  	
   

  
	
   

  	
   

  
	
  By:

  	
  /s/ Michael B. Richings

  	
   

  
	
   

  	
  Authorized Signatory

  
	
   

  	
   

  
	
  ALLIED
  NEVADA GOLD CORP.

  	
   

  
	
   

  	
   

  
	
  By:

  	
  /s/ Scott A. Caldwell

  	
   

  
	
   

  	
  Authorized Signatory

  
	
   

  	
   

  
	
  SIGNED,
  SEALED AND DELIVERED by

  	
  )

  	
   

  
	
  Carl
  Pescio in the presence of:

  	
  )

  	
   

  
	
   

  	
  )

  	
   

  
	
  Elizabeth Nunez

  	
   

  	
  )

  	
  /s/ Carl Pescio

  	
   

  
	
  Name of Witness

  	
  )

  	
  CARL PESCIO

  
	
   

  	
  )

  	
   

  
	
  /s/ Elizabeth
  Nunez

  	
   

  	
  )

  	
   

  
	
  Signature of
  Witness

  	
  )

  	
   

  
	
   

  	
   

  	
   

  
	
  SIGNED,
  SEALED AND DELIVERED by

  	
  )

  	
   

  
	
  Janet
  Pescio in the presence of:

  	
  )

  	
   

  
	
   

  	
  )

  	
   

  
	
  Elizabeth Nunez

  	
   

  	
  )

  	
  /s/ Janet Pescio

  	
   

  
	
  Name of Witness

  	
  )

  	
  JANET PESCIO

  
	
   

  	
  )

  	
   

  
	
  /s/ Elizabeth
  Nunez

  	
   

  	
  )

  	
   

  
	
  Signature of
  Witness

  	
  )

  	
   

  
								

 

 4

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00123-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00123-of-00352.parquet"}]]