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I'm interested in petrified wood for the scientific value (wood where the cell structure is well preserved), for the aesthetic value (mineralized with vivid colors and crystal shapes), and for oddities (like fungus, insect borings etc.) contained in the wood.  Below are three petrified wood slabs, from the United States, from my collection.  The below individual slab pictures were taken with the slabs dry, indoors using my camera with flash.  The close-up pictures were taken with my Dino-Lite digital microscope.

 

Petrified Wood, conifer, fungus Polyporites wardii, early Permian late Triassic 295 to 201 MYA, Chinle Formation, northern Arizona - 3.60 lbs. 10.5x8.75x0.53 inches

 

Traditionally this petrified wood has been identified as Araucarioxylon arizonicum, a conifer tree.  However,according to Wikipedia “ The validity of the name Araucarioxylon arizonicum has been questioned. A. arizonicum may actually be composed of several different genera and species.  A 2007 study on the syntypes used by Knowlton in describing the species has revealed that they belonged to three species. They were tentatively reclassified as Pullisilvaxylon arizonicum, Pullisilvaxylon daughertii, and Chinleoxylon knowltonii. The genus Araucarioxylon may thus be superfluous and illegitimate; and the petrified logs of Petrified Forest National Park may be composed of a greater diversity than initially believed.”

 

What makes this slab unique are the oval shaped patterns framing and permeating the piece, which are actually the fossil remains of a fungus (named Polyporites wardii), that invaded the ancient tree before it was fossilized.  The fungus is preserved in barite (fungus is almost never seen because it doesn't preserve in silica the way wood does).

 

1602925941_2PetrifiedWoodconiferAraucarioxylonarizonicumfungusPolyporiteswardiiearlyPermianlateTrias-FmnorthernArizona3.60lbs10_25x8_75x.5inches193.71USD1.thumb.jpg.86ca60700f3d16eb6043a3530b0fc8bc.jpg

 

1884331034_2PetrifiedWoodconiferAraucarioxylonarizonicumfungusPolyporiteswardiiearlyPermianlateTrias-FmnorthernArizona3.60lbs10_25x8_75x.5inches193.71USD2.thumb.jpg.a9d47e30ba57994f4eee1f6f50488792.jpg

 

1677114318_2PetrifiedWoodconiferAraucarioxylonarizonicumfungusPolyporiteswardiiearlyPermianlateTrias-FmnorthernArizona3.60lbs10_25x8_75x.5inches193.71USD3.thumb.jpg.ef274b9c981434d0079200681cf4062e.jpg

 

29707909_2PetrifiedWoodconiferAraucarioxylonarizonicumfungusPolyporiteswardiiearlyPermianlateTriassi-FmnorthernArizona3.60lbs10_25x8_75x.5inches193.71USD4.thumb.jpg.228fd6ef624c9efe0b65d285f82c6058.jpg

 

854544853_2PetrifiedWoodconiferAraucarioxylonarizonicumfungusPolyporiteswardiiearlyPermianlateTriass-FmnorthernArizona3.60lbs10_25x8_75x.5inches193.71USD5.thumb.jpg.2d4606d5c48679b8e3a3e02fd9249f06.jpg

 

113479632_2PetrifiedWoodconiferAraucarioxylonarizonicumfungusPolyporiteswardiiearlyPermianlateTriass-FmnorthernArizona3.60lbs10_25x8_75x.5inches193.71USD6.thumb.jpg.6132ca1e7d26b6bc984cebcedc256200.jpg

 

1604782102_2PetrifiedWoodconiferAraucarioxylonarizonicumfungusPolyporiteswardiiearlyPermianlateTrias-FmnorthernArizona3.60lbs10_25x8_75x.5inches193.71USD7.thumb.jpg.0f8f7f2fec0275a5b6aaaeaa95e6fc46.jpg

 

1202695814_2PetrifiedWoodconiferAraucarioxylonarizonicumfungusPolyporiteswardiiearlyPermianlateTrias-FmnorthernArizona3.60lbs10_25x8_75x.5inches193.71USD8.thumb.jpg.cefe4e2a51260f89806289a7eee0663b.jpg

 

 

 

Petrified Wood, Triassic 225 MYA, Chinle Formation near Holbrook, Arizona  - 745g 160 x200x12mm

 

This slab has incredible colors (purple, red, orange, yellow etc.) which is a major reason why Arizona petrified wood is highly desired by petrified wood collectors.

 

61178428_3PetrifiedWoodTriassic225MYAChinleFormationnearHolbrookArizona745g160x200x12mm79USD1.thumb.jpg.2a17cd942f112af419ed09bb587d80ca.jpg

 

1185850560_3PetrifiedWoodTriassic225MYAChinleFormationnearHolbrookArizona745g160x200x12mm79USD2.thumb.jpg.f64a340434c291285886f830b0e80029.jpg

 

2137454450_3PetrifiedWoodTriassic225MYAChinleFormationnearHolbrookArizona745g160x200x12mm79USD3.thumb.jpg.00268c83f1986bdd8a3d8c77789d787c.jpg

 

1406116902_3PetrifiedWoodTriassic225MYAChinleFormationnearHolbrookArizona745g160x200x12mm79USD4.thumb.jpg.2cc1d3d795ff678c73bc2c76ef6297d3.jpg

 

1157922076_3PetrifiedWoodTriassic225MYAChinleFormationnearHolbrookArizona745g160x200x12mm79USD5.thumb.jpg.84b90e5e916ed2bd2b5ba6633952adc5.jpg

 

1888170966_3PetrifiedWoodTriassic225MYAChinleFormationnearHolbrookArizona745g160x200x12mm79USD6.thumb.jpg.3167baeff1a2ad3d5ee32a8be8650442.jpg

 

1971597848_3PetrifiedWoodTriassic225MYAChinleFormationnearHolbrookArizona745g160x200x12mm79USD7.thumb.jpg.50919d92f5c3f713d1f816d28b9a5b99.jpg

 

463424213_3PetrifiedWoodTriassic225MYAChinleFormationnearHolbrookArizona745g160x200x12mm79USD8.thumb.jpg.d28b06bcc9405c467fcaf9854e37d0e8.jpg

 

821524404_3PetrifiedWoodTriassic225MYAChinleFormationnearHolbrookArizona745g160x200x12mm79USD9.thumb.jpg.908e07a22780e3130b9daa1db18d5745.jpg

 

640406440_3PetrifiedWoodTriassic225MYAChinleFormationnearHolbrookArizona745g160x200x12mm79USD10.thumb.jpg.3dcc4f8dff084492e6afc2dbb520ede9.jpg

 

 

Petrified Wood, early Eocene 50 MYA, Green River Formation, Blue Forest along ancient Lake Gosiute, Sweetwater County, Wyoming - 1.2 lbs. 8.5x6x.38 inches

 

This slab has really nice wood preservation with a very well defined heart in the center and stunning wood grain.  There is blue agate, with golden calcite filling some of the agate voids, some nice insect borings, as well as fossil ostracods near the rind. Per Viney 2020 The Blue Forest of Ancient Lake Gosiute Sweetwater County Wyoming “The lacustrine setting in which the silicified wood formed is contrasted with two geologic environments commonly associated with silicified wood deposits, trees transported by streams and rivers buried in fine-grained fluvial sediments of deltas and floodplains as well as lahars and ash produced from volcanic eruptions that bury trees. A recent scientific study of the Blue Forest fossil wood reveals that preservation occurred as a multistage mineralization process. The taphonomic sequence that included stromatolitic growth followed by wood desiccation and then exposure to mineral-laden waters is consistent with a playa-lake model for Lake Gosiute.”

 

375459538_1PetrifiedWoodbotryoidalagategoldencalciteinsectboringsostracodsEocene50MYAGreenRiverFmBlu-eetwaterCountyWyoming1.2lbs8.25x6x.38inches136.61USD1.thumb.jpg.145f88fd6f577eef2586845644137940.jpg

 

1807949873_1PetrifiedWoodbotryoidalagategoldencalciteinsectboringsostracodsEocene50MYAGreenRiverFmBl-eetwaterCountyWyoming1.2lbs8.25x6x.38inches136.61USD4.thumb.jpg.86261c9beee66e27b6aade91b6bbdb14.jpg

 

692935102_1PetrifiedWoodbotryoidalagategoldencalciteinsectboringsostracodsEocene50MYAGreenRiverFmBlu-eetwaterCountyWyoming1.2lbs8.25x6x.38inches136.61USD6.thumb.jpg.4b57e8cfe8a57f567ae3185c5b07b402.jpg

 

1268844053_1PetrifiedWoodbotryoidalagategoldencalciteinsectboringsostracodsEocene50MYAGreenRiverFmBl-eetwaterCountyWyoming1.2lbs8.25x6x.38inches136.61USD2.thumb.jpg.ff1303eeffc6abca9f78b8b3cc7a7086.jpg

 

738151244_1PetrifiedWoodbotryoidalagategoldencalciteinsectboringsostracodsEocene50MYAGreenRiverFmBlu-eetwaterCountyWyoming1.2lbs8.25x6x.38inches136.61USD3.thumb.jpg.d5ed6a7bfd78e4b34b23b6e526c78aee.jpg

 

1874246558_1PetrifiedWoodbotryoidalagategoldencalciteinsectboringsostracodsEocene50MYAGreenRiverFmBl-eetwaterCountyWyoming1.2lbs8.25x6x.38inches136.61USD8.thumb.jpg.c56d2b9b8e2e9fb67301fa9cd9fbf25f.jpg

 

1662108341_1PetrifiedWoodbotryoidalagategoldencalciteinsectboringsostracodsEocene50MYAGreenRiverFmBl-eetwaterCountyWyoming1.2lbs8.25x6x.38inches136.61USD5.thumb.jpg.d6f43b9091216c5db786d79e9475cd0b.jpg

 

1396860371_1PetrifiedWoodbotryoidalagategoldencalciteinsectboringsostracodsEocene50MYAGreenRiverFmBl-eetwaterCountyWyoming1.2lbs8.25x6x.38inches136.61USD7.thumb.jpg.379c5cc6c5356a6bf6de9ed671d8e4df.jpg

 

 

Marco Sr.

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Tidgy's Dad

Beautiful and fascinating. 

That fungus is incredible. 

Thanks for sharing these wonderful pieces. :wub:

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sixgill pete

Beautiful wood Marco. 

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13 minutes ago, sixgill pete said:

Beautiful wood Marco. 

 

Don

 

I really like the colors of that one piece from Arizona.  When I bought it, I thought that the pictures were probably enhanced, and that it wasn't going to be that colorful.  I was really pleasantly surprised when I opened the USPS box.

 

Marco Sr.

3 hours ago, Tidgy's Dad said:

Beautiful and fascinating. 

That fungus is incredible. 

Thanks for sharing these wonderful pieces. :wub:

 

I've seen a lot of petrified wood, but very few examples with fungus like that one piece.

 

Marco Sr.

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Wonderful piece and fantastic photos. If you feel like giving one of my old thread a bump, your photos would be most welcome.

cheers Bobby . 

 

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ThePhysicist

Great, now I need to add some petrified wood to the collection. Thanks a lot. :P 

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8 hours ago, ThePhysicist said:

Great, now I need to add some petrified wood to the collection. Thanks a lot. :P 

 

I have a good bit of petrified wood from Indonesia, but really didn't have any nice pieces from the United States.  I always wanted a nice Blue Forrest slab from Wyoming and a nice Chinle Formation slab from Arizona, two really well know US petrified wood locations, so I recently bought the slabs in this post.

 

Marco Sr.

11 hours ago, Bobby Rico said:

Wonderful piece and fantastic photos. If you feel like giving one of my old thread a bump, your photos would be most welcome.

cheers Bobby . 

 

 

Thank you.  I'll add pictures of a couple of pieces to your thread.

 

Marco Sr.

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9 hours ago, ThePhysicist said:

Great, now I need to add some petrified wood to the collection. Thanks a lot. :P 

Hay you will not be going wrong by adding some pet wood to your collection. 

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  • MarcoSr changed the title to Petrified Wood Slabs

Below is a small (136 gram 3.75x2.50x.375 to .5 inches), very colorful slice of petrified wood from Madagascar with some nice wood cell preservation.  I see a lot of petrified wood from Madagascar, and the colors of this small piece really stand out and make it worthy of posting.

 

EDIT:  Nearly all the petrified wood from Madagascar is from the Araucaria, a type of conifer commonly referred to as the Monkey Puzzle Tree.  I bought this piece because I thought it might be an example of the seed fern Rhexoxylon, which is very rare from Madagascar.  I just heard back from a petrified wood dealer, who is very knowledgeable about petrified wood, and he also thinks that this piece is from the seed fern Rhexoxylon.

 

 

1763836084_4PetrifiedWoodmaybeSeedFernRhexoxylon16.85Triassic220MYAAmbilobeMadagascar136g3_75x2_50x.375to.5inches1.thumb.jpg.d3963c30bd1ecd961fdc49d5db234828.jpg

 

1541233938_4PetrifiedWoodmaybeSeedFernRhexoxylon16.85Triassic220MYAAmbilobeMadagascar136g3_75x2_50x.375to.5inches2.thumb.jpg.8b2551d6dfa65fb8776ba28c9198251e.jpg

 

292376343_4PetrifiedWoodmaybeSeedFernRhexoxylon16.85Triassic220MYAAmbilobeMadagascar136g3_75x2_50x.375to.5inches5.thumb.jpg.182d04ebf8fe68e1722c37496d3e5e04.jpg

 

93653727_4PetrifiedWoodmaybeSeedFernRhexoxylon16.85Triassic220MYAAmbilobeMadagascar136g3_75x2_50x.375to.5inches7.thumb.jpg.c58a6ab693dc7491bb87f36038f80da7.jpg

 

547562856_4PetrifiedWoodmaybeSeedFernRhexoxylon16.85Triassic220MYAAmbilobeMadagascar136g3_75x2_50x.375to.5inches6.thumb.jpg.2fd728ab832fc591dc785dcd97dbdfba.jpg

 

485521912_4PetrifiedWoodmaybeSeedFernRhexoxylon16.85Triassic220MYAAmbilobeMadagascar136g3_75x2_50x.375to.5inches3.thumb.jpg.00b3ca17e61167f3aec1e7e75ea668e1.jpg

 

1377546078_4PetrifiedWoodmaybeSeedFernRhexoxylon16.85Triassic220MYAAmbilobeMadagascar136g3_75x2_50x.375to.5inches4.thumb.jpg.fce3dbdd85c1385012351946d76bfbd0.jpg

 

1750937266_4PetrifiedWoodmaybeSeedFernRhexoxylon16.85Triassic220MYAAmbilobeMadagascar136g3_75x2_50x.375to.5inches8.thumb.jpg.5cd532de8cb96025120ff6fbabdd3b3e.jpg

 

334811225_4PetrifiedWoodmaybeSeedFernRhexoxylon16.85Triassic220MYAAmbilobeMadagascar136g3_75x2_50x.375to.5inches9.thumb.jpg.16cdbd9b952b536a3a7c3b26ac721e6f.jpg

 

1788790824_4PetrifiedWoodmaybeSeedFernRhexoxylon16.85Triassic220MYAAmbilobeMadagascar136g3_75x2_50x.375to.5inches10.thumb.jpg.287f54767bc1dfff78d23ea08cdfe6ce.jpg

 

 

Marco Sr.

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I really don’t/didn’t  find much petrified wood at the marine sites that I collect in MD and Virginia, so unfortunately I had to buy most of the petrified wood in my fossil collection like the slabs in the above posts.  I do find a good amount of small pieces of lignitized wood especially in the Eocene, Nanjemoy Formation of Virginia.  I have found small pieces of petrified wood, usually either embedded or partially covered with Pleistocene bog iron, in Virginia.  Below are some examples.  My son Marco Jr. found, by far, the nicest piece of petrified wood that I’ve seen from marine sites in MD/VA, in the Miocene, Eastover Formation of Virginia, 5 or 6 years back.  See the below pictures.

 

Petrified wood in bog iron from the Pleistocene of Virginia:

 

 

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Petrified log from the Miocene, Eastover Formation, of Virginia (33 inches long, 28 inches around at the base, over 100 pounds).  These pictures were taken in my driveway.:

 

1688661290_FossilWoodMioceneEastoverFormation33incheslong28inchesaroundatthebaseover100pounds.JPG.fdc475259a110743f3a1af614313d178.JPG

 

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Marco Sr.

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  • 3 weeks later...

This piece of petrified wood from Brazil has some of the most interesting patterns that I’ve seen in petrified wood and is one of my favorite pieces in my collection.  Although the species is very common (It is estimated to represent close to 90% of some fossil assemblages in Brazil), I don’t see it for sale often on the web like other species.  The below individual slab pictures were taken with my camera indoors, with the slabs dry, using camera flash.  The close-up pictures were taken with by Dino-Lite digital microscope at various magnification levels.

 

Petrified tree fern, Tietea singularis, Permian 275MYA, Motuca Formation, Parnaíba Basin in Filadélfia, Tocantins, Brazil (340 grams 8 x 4.75 x.25 inches):

 

173106277_11PetrifiedtreefernTieteasingularisPermian275MYAMotucaFormationParnabaBasininFiladlfiaTocantinsBrazil340g8x4_75x.25inches71_131.thumb.jpg.fec90afabd1f9a5280c3f08825eff912.jpg

 

1758461748_11PetrifiedtreefernTieteasingularisPermian275MYAMotucaFormationParnabaBasininFiladlfiaTocantinsBrazil340g8x4_75x.25inches71_132.thumb.jpg.4785da22d022083cf9309f2dfa20ce54.jpg

 

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1220067033_11PetrifiedtreefernTieteasingularisPermian275MYAMotucaFormationParnabaBasininFiladlfiaTocantinsBrazil340g8x4_75x.25inches71_139.thumb.jpg.eed8e254a792874d45fcac1668742cad.jpg

 

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Marco Sr.

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Very nice collection I am a big fan of polished petrified wood and have a little collection myself.  Your picture a beautifully abstract. Cheers Bobby 

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55 minutes ago, Tidgy's Dad said:

Absolutely stunning! :b_love1:

 

Thank you.  I look at a lot of petrified wood for sale on the web, and 99% of it looks the same to me.  I try to buy the 1% pieces which are unusual and different and which are very aesthetically interesting.

 

Marco Sr.

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42 minutes ago, Bobby Rico said:

Very nice collection I am a big fan of polished petrified wood and have a little collection myself.  Your picture a beautifully abstract. Cheers Bobby 

 

I love abstract art, the colors, the shapes.  That is why I have an interest in petrified wood.  Close-up images of petrified wood are natural abstract art.  I try to frame my close-up petrified wood pictures as if they were abstract art that I was going to put up on my wall.

 

Marco Sr.

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Very wonderful collection! Im also a fan of petrifield wood slab with polished as cross section. I have collect almost of petrifield wood in Vietnam from many diferent period. About the polished, is that you do it your self? 

Still enjoy your collection, hope to see more in future.

 

Cheer Le. 

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1 hour ago, vietnamfossil said:

Very wonderful collection! Im also a fan of petrifield wood slab with polished as cross section. I have collect almost of petrifield wood in Vietnam from many diferent period. About the polished, is that you do it your self? 

Still enjoy your collection, hope to see more in future.

 

Cheer Le. 

 

Thank you.  No, I buy most of my petrified wood pieces polished already.  I have polished a few pieces by hand, but I'm not very good at polishing by hand.

 

I have not seen petrified wood from Vietnam before.  Can you post a few pictures of some pieces?

 

Marco Sr.

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These slabs are being with me now. As I still have some more but I keep in another place so I don’t have photo. 
This is an iron slab from Daknong province  - Pliocene to Early Pleistocene . Very few wood structure remain can see on microscope . 

 

 

5C840CD1-E3BF-46C1-B8BD-D6B6456E4700.jpeg

D4A558C8-39A1-483D-970F-70553317D5FB.jpeg

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I have more wood slab I will post photo later when I came back home. Covid make everything complicated. 
If you like to collect petrified wood from Southeast Asia I would like to make trade with you. I like your Pleistocene wood as I’m studying in Pleistocene environment. 
 

Le

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On 9/16/2021 at 2:40 AM, vietnamfossil said:

These slabs are being with me now. As I still have some more but I keep in another place so I don’t have photo. 
This is an iron slab from Daknong province  - Pliocene to Early Pleistocene . Very few wood structure remain can see on microscope . 

 

 

5C840CD1-E3BF-46C1-B8BD-D6B6456E4700.jpeg

D4A558C8-39A1-483D-970F-70553317D5FB.jpeg

 

On 9/16/2021 at 2:42 AM, vietnamfossil said:

This one from Eocene - Oligocene . This is carbon wood from North Vietnam. 
 

196B2E9E-4895-4BCF-96B8-8E45DFB151CC.jpeg

00D33081-B45B-44EE-8393-BB2F1580256B.jpeg

 

Very nice.  Thank you for posting.

 

Marco Sr.

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4 hours ago, vietnamfossil said:

I have more wood slab I will post photo later when I came back home. Covid make everything complicated. 
If you like to collect petrified wood from Southeast Asia I would like to make trade with you. I like your Pleistocene wood as I’m studying in Pleistocene environment. 
 

Le

 

I will PM you about this.  Most of the Pleistocene pieces that I have are small, only a few inches.

 

Marco Sr.

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The below slab of Teredo-bored petrified wood is one of my favorite petrified wood pieces in my collection.  Teredo-bored petrified wood is the state fossil of North Dakota.  During the Paleocene period, parts of North Dakota were covered by swamps, and trees growing in these swamps fell into the water and were washed out to sea where they were bored into by small, worm-shaped marine mollusks called Teredos.  The bored holes filled in with minerals as the wood fossilized.  I find it very interesting that the bored holes don’t cross each other.

 

The below individual slab picture was taken with my camera indoors, with the slab dry, using camera flash.  The close-up pictures were taken with by Dino-Lite digital microscope at various magnification levels.  Even with all the bored holes, there are still portions of this slab that show detailed wood cell structure.

 

Teredo-Bored Petrified Wood Slab, Paleocene 60 MYA, Canon Ball Formation, North Dakota (2,150 grams 10.25x9x.625 inches):

 

1244770494_10TeredoBoredPetrifiedWoodSlabPaleocene60MYACanonBallFormationNorthDakota2150g10.25x9x.625inches205_281.thumb.jpg.7a93e436c09cebf49cbb7c34ad8226bd.jpg

 

669320498_10TeredoBoredPetrifiedWoodSlabPaleoceneEpochCanonBallFormationNorthDakota2150g10.25x9x.625inches205_282.thumb.jpg.59c5da26658275de272fd5e9c07cb46a.jpg

 

973505460_10TeredoBoredPetrifiedWoodSlabPaleoceneEpochCanonBallFormationNorthDakota2150g10.25x9x.625inches205_285.thumb.jpg.1f4aebd6a68c6140a47749298b127a3f.jpg

 

172542600_10TeredoBoredPetrifiedWoodSlabPaleoceneEpochCanonBallFormationNorthDakota2150g10.25x9x.625inches205_2814.thumb.jpg.d1b7f0cc5a93af220865364851571e10.jpg

 

203893051_10TeredoBoredPetrifiedWoodSlabPaleoceneEpochCanonBallFormationNorthDakota2150g10.25x9x.625inches205_2815.thumb.jpg.e055e19902a06ccea891e65a4f67a2ec.jpg

 

644927605_10TeredoBoredPetrifiedWoodSlabPaleoceneEpochCanonBallFormationNorthDakota2150g10.25x9x.625inches205_2812.thumb.jpg.837b85f7f9f19777aaf37022053eb682.jpg

 

1350002610_10TeredoBoredPetrifiedWoodSlabPaleoceneEpochCanonBallFormationNorthDakota2150g10.25x9x.625inches205_289.thumb.jpg.22c2a49de077ecbe58ac894fb0b48c91.jpg

 

1103151730_10TeredoBoredPetrifiedWoodSlabPaleoceneEpochCanonBallFormationNorthDakota2150g10.25x9x.625inches205_2810.thumb.jpg.1f00e421021fb2cd4af7d2d9d1fd71dd.jpg

 

 

Marco Sr.

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7 hours ago, snolly50 said:

@MarcoSr Lovely pieces and very nice images. Thanks.

 

Thank you.  Over the last few years my fossil interests have been changing.  I still search matrix every day for micro vertebrate fossils, but I have become very interested in larger fossils like agatized coral, stromatolites and petrified wood.  Unfortunately, I don't have access to fossil collecting sites that contain agatized coral, stromatolites or petrified wood nor do I have the tools or skills to cut and polish these types of fossils, so I do my collecting on the web, searching for unusual specimens that I can purchase.

 

Marco Sr.

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