NEW MINERAL DISCOVERY 101 : Kernowite

 

Kernowite: Mineral information, data and localities. (mindat.org)

Kernowite Formula: Cu2Fe(AsO4)(OH)4 • 4H2O 

Colour: Emerald-green 

Crystal System: Monoclinic

Name:

For Kernow, the Cornish language name for Cornwall.

This is the third mineral to be named after Cornwall - following cornwallite and cornubite, which are both also copper arsenates.

Type Locality:

ⓘ Wheal Gorland, St Day, Cornwall, England, UK

The Fe³⁺- analogue of liroconite. Found on an old museum specimen.

Kernowite is a complex arsenate mineral. This is a new mineral that has been discovered by scientists analysing a rock mined in Cornwall about 220 years ago. The name of the mineral comes from the word Kernow, the Cornish language word for Cornwall. A group led by Natural History Museum (NHM) mineralogist Mike Rumsey made the discovery while studying a rock taken from Wheal Gorland mine in St Day. For centuries, mineralogists believed the green crystals to be a variation of another mineral, liroconite, but Dr.Rumsey and his team found it has a different chemical composition

Source -

https://www.cambridge.org/core/journals/mineralogical-magazine/article/kernowite-cu2feaso4oh44h2othe-fe3analogue-of-liroconite-from-cornwall-uk/

NEW MINERAL DISCOVERY 101 : Daemovite

 

Credit: Aaron Celestian/Natural History Museum of Los Angeles County

A mineral was found inside a Diamond, named Daemovite in honour of the Geophysicist Ho-Kwang (Dave) 

It has a chemical composition of CaSiO3 - Perovskite

This new mineral was found in a diamond found in Orapa, Kimberlite pipe, Botswana.

It formed deep in the earth’s mantle happens to contain a mineral never seen before in nature, it may help reveal new information about the structure of the planet at depths of more than 660 kilometers.

Actually Perovskite is the most abundant substance on Earth as is makes up most of the Mantle, i.e. 80 percent of the volume of the planet.

It likely formed 660 and 900 km below the planet’s surface, says mineralogist Oliver Tschauner of the University of Nevada, Las Vegas. It has been synthesised in the lab earlier.

source - Geodigest (wiley.com)