description Mimetite Overview
Mimetite is a lead chloroarsenate mineral belonging to the apatite group. Its name comes from the Greek word for imitator, referring to its resemblance to pyromorphite, and it commonly forms yellow, orange, or brown barrel-shaped crystals that are collected as mineral specimens.
help Mimetite FAQ
Why is the mineral called 'mimetite'?
The name comes from the Greek word for 'imitator,' because mimetite closely resembles pyromorphite. The two minerals are closely related members of the apatite group and can be difficult to tell apart without testing.
Is mimetite toxic to handle?
Yes, it's a lead chloroarsenate with the formula Pb5(AsO4)3Cl, meaning it contains both lead and arsenic. Collectors should wash their hands after handling it, keep it away from children, and never grind or dry-sand specimens, which creates hazardous dust.
Where do the best mimetite specimens come from?
Classic localities include the Tsumeb mine in Namibia and the Ojuela mine at Mapimí in Mexico, both famous among collectors. Specimens from these sites display the yellow, orange, and brown barrel-shaped crystals the species is prized for.
How can you tell mimetite apart from pyromorphite?
The two form a mineral series: pyromorphite is the phosphate end-member and mimetite is the arsenate end-member, and their yellow-to-green colors overlap. Visual ID is often unreliable, so distinguishing them typically requires tests such as specific gravity measurement or analytical methods.
explore Explore More
Reviews & Comments
Write a Review
Be the first to review
Share your thoughts with the community and help others make better decisions.
