Clinochlore

Unknown Owner

Leuchtenbergite is a rare chromium rich variety of clinochlore first described in the 19th century from the Ural Mountains of Russia. It was named in honor of the Duke of Leuchtenberg and became known as a distinctive green micaceous mineral occurring in metamorphic rocks and chromium bearing deposits. This is a superb large sharply formed cluster of lustrous crystals without matrix. The specimen comes with an antique label as shown at the end of the video and dates to the very early 20th century if not even earlier than that.