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which then solidified and condensed into chondritic masses
usually silica (silicon dioxide
Zusätzliche Informationen: Quarz ist eines der häufigsten Mineralien
the color comes from admixed hematite
this crinoid colony exemplifies the extraordinary preservation quality of the Holzmaden fossil sites and represents an important specimen for research
Opalisierender Ammolite | Kanada Fossil which then solidified and condensedOrigin: Southern Alberta, Canada Age: Upper Cretaceous, Bearpaw Formation, about 70 million years Size: W127cm H100cm Diameter of the fossil: 45 cm Weight: 224 kg Description: An extremely fascinating opalescent ammonite, still preserved in its original host rock, reveals its natural colors in a spectacular luster. Its striking shades of red and green are interspersed with vibrant orange and gold nuances, while rare blue and purple splashes emerge in