Description :

An exceptional, 9-piece estate field collection of raw minerals, crystalline matrices, and fossilized specimens sourced from the historic Pacific Northwest.

This educational and highly aesthetic grouping features vibrant colors, unique crystal habits, and includes a fascinating handwritten field note attributing a rare concretion to "Marcus Flats"—a historic region along the upper Columbia River basin in Northeast Washington, now largely altered or submerged beneath Lake Roosevelt. Perfect for display, study, or lapidary work

• Green Opalized Petrified Wood: A striking specimen featuring beautiful green-hued silica replacement and distinct, tight parallel banding
• .Petrified Wood Bark / Root Fragment: A highly textured, weathered tan specimen displaying distinct fluted, organic grooves mimicking ancient bark or wood grain geometry.
• Amethyst Quartz Vein Matrix: A raw chunk showing pockets of crystalline pale-purple amethyst running through a dense silica matrix.
• Druzy Quartz / Calcite Cluster: A heavily mineralized matrix blanketed in a sparkling layer of tiny, secondary crystal faces that catch the light beautifully.
• Iron-Rich Laterite / Bauxite Crust: A heavy, deeply weathered ore specimen featuring intense, vibrant red-orange and deep purple iron oxide crusts.
• Fibrous Amphibole Rock: A dense, dark metamorphic specimen composed of an intricate, interlocking network of slender, needle-like acicular crystals.
• Bladed Metallic Ore Matrix: A heavy mineralized specimen featuring distinct, intersecting bladed/tabular crystal habits.
• The Marcus Flats Concretion: The labeled specimen showing a porous, brecciated, and organically cemented structure typical of the ancient Columbia River basin.