Petrified wood is a fossil formed when minerals infiltrate cavities between and within cells of natural wood. Usually infiltrated by silica or calcite, the replacement of the organic tissue with the minerals can be so precise that the internal structure as well as the external shape can still be very well-represented. The different minerals can give petrified wood a range of different colors. A beautiful specimen, this will be of enormous benefit for featuring a comprehensive rock collection in the science classroom, or for the rock collector in your family.
Please be aware that this is a natural mineral and as such each piece is one of a kind! The one you receive may not be exactly the same as the ones pictured but it will be similar. Price is per each piece.They come in irregular shapes, sizes and weights.
Warning: Choking hazard due to small parts. Not for children under 3 years old.
Durable, anti-fog safety glasses that fit comfortably on any head size.
These extra-large, powder-free, 5mil Nitrile Exam Gloves are designed and manufactured for superior comfort and protection.
These ear plugs are made of self adjusting foam that provides a comfortable, low pressure fit and excellent sound filtration.
These goggles meet the American National Standards Institution (ANSI Z87.1) and Canadian Standards (CSA Z94.3) regulations.
Great exam quality Nitrile gloves in size SMALL.
Professional Powder-Free Textured Nitrile Exam Gloves with Aloe, Size Large
Defy gravity with this cool balancing eagle!
Build your very own smart robot!
This science kit is an essential introduction to physics knowledge!
Exciting magnet exploration for ages 8 and up!
Build a hand that realistically moves its fingers using shape memory allow technology!
Over 300 electronics projects in this kit will keep the young scientist busy!
At xUmp.com you will find a large selection of scientific products carefully curated by real scientists and educators. We sell everything from educational toys, teacher supplies for science classroom, lab equipment, science toys, science fair supplies, classroom equipment, chemistry glassware, chemistry lab equipment, physics demos, electronics supplies, robots, science kits to geeky science gifts.