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Crushed Petrified Wood from Arizona, Coarse Crush, Gravel Size, 4mm - 2mm

Crushed Petrified Wood from Arizona, Coarse Crush, Gravel Size, 4mm - 2mm

Regular price $7.00 USD
Regular price Sale price $7.00 USD
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This crushed petrified wood is from Arizona and formed during the Late Triassic period. At that time, downed trees accumulated in river channels and were subsequently buried by sediment containing volcanic ash. Groundwater then dissolved the silica from the volcanic ash and carried it into the downed logs, where it formed quartz crystals that gradually replaced the organic matter over time. Iron oxide and other trace elements combined with the silica to create the variety of colors that we see in petrified wood from Arizona today. This crushed material has a wonderful geologic story and would be a great selection for your unique mineral project. 

Our coarse material is considered to be pea- sized gravel, ranging between 4 millimeters to 2 millimeters. Please see the corresponding sediment size chart. 

Mineral Properties

  • Mohs’s Hardness: 6.5 -7 
  • Specific Gravity (g/cm3): 2.55 - 2.70
  • Luster: Vitreous, Greasy
  • Color: Red, Brown, Tan, Yellow, Grey
  • Origin: Arizona, United States

This product is not man-made, mixed with resin, dyed, or stabilized. Pictures are taken in full sun and material is dry. Size measurements are using the metric system (millimeters), including the metric ruler (cm/mm) as shown in the product photos.

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  • Shipping

    We offer free US shipping on any order over $50. Orders are typically shipped within one to two business days and spend 2-5 days in transit. This means your order should arrive at your doorstep within 4-6 business days -- and often less!

  • Returns

    We offer a hassle-free 30-day return policy. If you wish to return or exchange any product in your order, simply email, and we will help you process the request.


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