Most likely mature Black Oak; alternatives include California live oak or another rough-barked oak.
Quercus kelloggii (tentative) · Hardwood
AI-generated identification · may be incorrect- Type
- Hardwood
- Origin
- Black oak is native to California and southwestern Oregon, especially foothill and mountain regions.
- Hardness
- Black oak: approximately 1,130 lbf Janka—Medium; species confirmation is required.
- Durability
- Heartwood is generally moderately durable, but bark is not a durability indicator; weathering and insects vary substantially.
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Grain Pattern
Not assessable: image shows bark only, with no end grain, face grain, or board cut.
Color & Appearance
Outer bark is gray to charcoal, deeply fissured and flaky; wood color and luster cannot be determined.
Hardness (Janka)
Black oak: approximately 1,130 lbf Janka—Medium; species confirmation is required.
Durability & Decay Resistance
Heartwood is generally moderately durable, but bark is not a durability indicator; weathering and insects vary substantially.
Value & Age
Roughly $5–$12 per board foot for ordinary Black Oak lumber; figured or kiln-dried stock may cost more.
AI estimate for general guidance only — not a professional appraisal. Actual value depends on grade, dimensions, condition, and local market demand.
- Wood Age Estimate
- Cannot estimate sample age; bark texture indicates a mature tree, not the age of the pictured material.
Common Uses
Furniture, flooring, cabinetry, veneer, barrels, and fuel; bark itself is generally not used as structural lumber.
Geographic Origin
Black oak is native to California and southwestern Oregon, especially foothill and mountain regions.
Workability
Moderately workable when milled; can machine well but may show tear-out and tannin-related staining around fasteners or iron.
Finish Recommendations
For lumber, sand evenly and use oil, lacquer, shellac, or polyurethane; test first for tannin bleed and uneven absorption.
Notable Features
The image captures distinctive plated, furrowed mature oak bark, but no reliable wood-specific features.