Tumbled Serpentinite Pseudofossil (Non-biological)
Inorganic mineral specimen; mimicry of algal mats or organic texture • Pseudofossil; Metamorphic rock with mineral patterns mimicking organic structures
Geological Period
Proterozoic to Mesozoic (Variable based on regional metamorphism events)
Estimated Age
Typically 100 to 2,000 million years
Preservation Type
Metamorphic recrystallization; hydrothermal alteration of ultramafic rock
Condition Assessment
Excellent (as a mineral specimen); polished and durable with no visible fractures
Taxonomic Classification
Non-taxonomic; Phylum: None (Inorganic Mineral Assemblage)
Morphological Description
Elongated, water-worn or tumbled cobble with smooth, waxy surface. Variegated coloration featuring dark forest green, olive, and pale yellowish-green patches in a chaotic, interlocking pattern.
Rock Matrix
Serpentinite, likely containing lizardite, chrysotile, and magnetite
Formation & Location
Often found in Ophiolite complexes; common locations include Lizard Peninsula (UK), California (USA), or the Alps
Size & Dimensions
Approximately 5-8 cm in length; typical for pocket-sized tumbled stones
Value & Rarity
Estimated Market Value
$5.00 - $15.00 USD
Auction Estimate
$10.00 - $20.00 USD (as a decorative mineral lot)
Rarity Assessment
Common; widely distributed in geological suture zones globally
Scientific Significance
Provides evidence of deep-crustal hydration processes and tectonic plate movements rather than biological evolution
Preparation Recommendations
Keep away from harsh acids; clean with mild soap and water. Best displayed as a tactile or decorative specimen.
Notable Features
High-gloss tumbled finish; 'Snakeskin' texture which often causes misidentification as petrified organic matter or skin fragments.