Petrified Wood Division

Petrified wood  is a type of fossil: it consists of fossil wood where all the organic materials have been replaced with minerals (most often a silicate, such as quartz), while retaining the original structure of the wood. The petrifaction process occurs underground, when wood becomes buried under sediment and is initially preserved due to a lack of oxygen. Mineral-rich water flowing through the sediment deposits minerals in the plant's cells and as the plant's lignin and cellulose decay away, a stone mould forms in its place.

Elements such as manganese, iron and copper in the water/mud during the petrification process give petrified wood a variety of color ranges. Pure quartz crystals are colorless, but when contaminants are added to the process the crystals take on a yellow, red or other tint.

Following is a list of contaminating elements and related color hues:

• carbon - black
• cobalt - green/blue
• chromium - green/blue
• copper - green/blue
• iron oxides - red, brown, and yellow
• manganese - pink/orange
• manganese oxides - black

Petrified wood can preserve the original structure of the wood in all its detail, down to the microscopic level. Structures such as tree rings and the various tissues are often observed features.

Image Code F558

Catalogue No.: F558 Description: Petrified Wood. USA. This fine and richly coloured example of petrified wood also exhibits its fine bark texture. The original surface of the trunk has been retained with the grain still visible to the naked eye and beautiful patination in soft shades of brown, gold and red which gives it the unmistakable appearance of wood. The upper surface has been polished, perfectly exhibiting the inner structure as an interlocking mosaic of brilliantly coloured crystallization. It has been preserved for millions of years by the process of petrification. This process turns the wood into quartz crystal. Size: 940 x 750mm.

Image Code F559

Catalogue No.: F559 Description: Petrified Wood. Indonesia. This fine and richly coloured example of petrified wood also exhibits its rough bark texture. The original surface of the trunk has been retained with the grain still visible to the naked eye with beautiful patination in soft shades of orange, brown and red which gives it the unmistakable appearance of wood. The upper surface has been polished, perfectly exhibiting the inner structure as an interlocking mosaic of brilliantly coloured crystallization. It has also been sliced along its length and the exposed surface polished to show the same glowing colours. It has been preserved for millions of years by the process of petrification. This process turns the wood into quartz crystal. Size: 1140 x 800mm.

Image Code F589

Catalogue No.: F589 Description: Petrified Wood. USA. Size: 270 x 220mm.

Image Code F590

Catalogue No.: F590 Description: Petrified Wood. USA. Size: 280 x 105mm.

Image Code F591

Catalogue No.: F591 Description: Petrified Wood. USA. Size: 340 x 315mm.

Image Code F593

Catalogue No.: F593 Description: Petrified Wood. USA. Size: 351 x 280mm.

Image Code F647

Catalogue No.: F647 Description: Patagonian Stones. Petrified wood (conifer). Upper Cretaceous. Allen formation. Patagonia, Argentina. Size: 570 x 120mm.

Image Code F681

Catalogue No.: F681 Description: Petrified Wood. USA. Size: 297 x 130mm.

Image Code F682

Catalogue No.: F682 Description: Petrified Wood. USA. Size: 325 x 275mm.

Image Code F683

Catalogue No.: F683 Description: Petrified Wood. USA. Size: 310 x 160mm.

Image Code F684

Catalogue No.: F684 Description: Petrified Wood. USA. Size: 405 x 280mm.

Image Code F2944

Catalogue No.: F2944 Description: Petrified Tree Trunk. Size: 190 x 130mm.

Image Code F2954

Catalogue No.: F2954 Description: Psaronios Wood (fossilized tree trunk). Brazil. Permian Age. Size: 470 x 420mm.

Image Code F3750

Catalogue No.: F3750 Description: Petrified Wood. Size: 66 X 143mm.

Image Code F4366

Catalogue No.: F4366 Description: Petrified Wood. Size: 530 X 65mm.

Image Code F4367

Catalogue No.: F4367 Description: Petrified Wood. Size: 410 X 80mm.

Image Code F4368

Catalogue No.: F4368 Description: Petrified Wood. Size: 250 X 90mm.

Image Code F4369

Catalogue No.: F4369 Description: Petrified Wood. Size: 260 X 90mm.

Image Code F4320

Catalogue No.: F4320 Description: Petrified Wood. Size: 750 X 60mm.

Image Code F4321

Catalogue No.: F4321 Description: Petrified Wood. Size: 600 X 60mm.

Image Code F4322

Catalogue No.: F4322 Description: Petrified Wood. Size: 580 X 62mm.

Image Code F4323

Catalogue No.: F4323 Description: Petrified Wood. Size: 680 X 80mm.

Image Code F4324

Catalogue No.: F4324 Description: Petrified Wood. Size: 660 X 85mm.

Image Code F4325

Catalogue No.: F4325 Description: Petrified Wood. Size: 800 X 90mm.

Image Code F4326

Catalogue No.: F4326 Description: Petrified Wood. Size: 620 X 70mm.

Image Code F4327

Catalogue No.: F4327 Description: Petrified Wood. Size: 680 X 100mm.

Image Code F4328

Catalogue No.: F4328 Description: Petrified Wood. Size: 740 X 75mm.

Image Code F4329

Catalogue No.: F4329 Description: Petrified Wood. Size: 760 X 50mm.

Image Code F4330

Catalogue No.: F4330 Description: Petrified Wood. Size: 600 X 70mm.

Image Code F4331

Catalogue No.: F4331 Description: Petrified Wood. Size: 730 X 90mm.

Image Code F4332

Catalogue No.: F4332 Description: Petrified Wood. Size: 690 X 90mm.

Image Code F4333

Catalogue No.: F4333 Description: Petrified Wood. Size: 590 X 50mm.

Image Code F4334

Catalogue No.: F4334 Description: Petrified Wood. Size: 720 X 80mm.

Image Code F4335

Catalogue No.: F4335 Description: Petrified Wood. Size: 640 X 110mm.

Image Code F4336

Catalogue No.: F4336 Description: Petrified Wood. Size: 750 X 75mm.

Image Code F4337

Catalogue No.: F4337 Description: Petrified Wood. Size: 600 X 45mm.

Image Code F4338

Catalogue No.: F4338 Description: Petrified Wood. Size: 570 X 70mm.

Image Code F4339

Catalogue No.: F4339 Description: Petrified Wood. Size: 770 X 60mm.

Image Code F4340

Catalogue No.: F4340 Description: Petrified Wood. Size: 610 X 50mm.

Image Code F4341

Catalogue No.: F4341 Description: Petrified Wood. Size: 650 X 60mm.

Image Code F4342

Catalogue No.: F4342 Description: Petrified Wood. Size: 670 X 80mm.

Image Code F4343

Catalogue No.: F4343 Description: Petrified Wood. Size: 620 X 90mm.

Image Code F4344

Catalogue No.: F4344 Description: Petrified Wood. Size: 650 X 80mm.

Image Code F4345

Catalogue No.: F4345 Description: Petrified Wood. Size: 660 X 55mm.

Image Code F4346

Catalogue No.: F4346 Description: Petrified Wood. Size: 590 X 60mm.

Image Code F4347

Catalogue No.: F4347 Description: Petrified Wood. Size: 600 X 110mm.

Image Code F4348

Catalogue No.: F4348 Description: Petrified Wood. Size: 470 X 80mm.

Image Code F4349

Catalogue No.: F4349 Description: Petrified Wood. Size: 650 X 60mm.

Image Code F4350

Catalogue No.: F4350 Description: Petrified Wood. Size: 670 X 40mm.

Image Code F4351

Catalogue No.: F4351 Description: Petrified Wood. Size: 440 X 50mm.

Image Code F4352

Catalogue No.: F4352 Description: Petrified Wood. Size: 400 X 50mm.

Image Code F4353

Catalogue No.: F4353 Description: Petrified Wood. Size: 730 X 140mm.

Image Code F4354

Catalogue No.: F4354 Description: Petrified Wood. Size: 750 X 60mm.

Image Code F4355

Catalogue No.: F4355 Description: Petrified Wood. Size: 700 X 80mm.

Image Code F4356

Catalogue No.: F4356 Description: Petrified Wood. Size: 740 X 65mm.

Image Code F4357

Catalogue No.: F4357 Description: Petrified Wood. Size: 420 X 60mm.

Image Code F4358

Catalogue No.: F4358 Description: Petrified Wood. Size: 460 X 40mm.

Image Code F4359

Catalogue No.: F4359 Description: Petrified Wood. Size: 440 X 35mm.

Image Code F4360

Catalogue No.: F4360 Description: Petrified Wood. Size:540 X 60mm.

Image Code F4361

Catalogue No.: F4361 Description: Petrified Wood. Size: 400 X 80mm.

Image Code F4362

Catalogue No.: F4362 Description: Petrified Wood. Size: 580 X 50mm.

Image Code F4363

Catalogue No.: F4363 Description: Petrified Wood. Size: 400 X 60mm.

Image Code F4364

Catalogue No.: F4364 Description: Petrified Wood. Size: 470 X 35mm.

Image Code F4365

Catalogue No.: F4365 Description: Petrified Wood. Size: 530 X 70mm.

Image Code F4484

Catalogue No.: F4484 Description: Large Petrified Tree Branch. Size: 1730 X 790mm.

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Victor Pracas Collection           Contact: vmpcollect@gmail.com
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