Geode with smoky quartz, calcite and geothite

This two-part, 23-cm-high geode with smoky quartz, calcite and geothite was found in the partially rocky mountain pastures at Gardejea - Curasòa and is an impressive example of the minerals of volcanic origin found on the Seiser Alm plateau. This splendid geode dates back to a time between 237 and 235 million years ago, when lava streams full of bubbles coming from the earth's interior collected on sea beds.