Latest Headlines from Nourish | The Nourish Mission

Deep-metals reveal Earth’s hidden recycling system

What's happened

New research on CLIPPIR diamonds shows unusual iron-rich olivine in kimberlites, offering clues about rocks hosted diamonds and informing exploration. The study identifies iron-rich mantle domains linked to superdeep diamonds, suggesting kimberlites with such minerals have higher potential to host CLIPPIR diamonds.

What's behind the headline?

Critical analysis

  • The article highlights a concrete link between deep Earth processes and surface mineral discoveries, grounding future exploration in mineral fingerprints.
  • Readers should consider how limited occurrences of CLIPPIR diamonds constrain broader conclusions about mantle recycling.
  • The study’s practical takeaway—target kimberlites with iron-rich olivine—translates deep-earth science into a tangible rule for mining exploration.

Forecast: If iron-rich olivine signatures are robust indicators, exploration efforts will increasingly focus on such kimberlites, potentially accelerating discoveries of CLIPPIR diamonds. This could refine resource maps and investment strategies for diamond companies.

How we got here

Researchers focus on CLIPPIR (superdeep) diamonds formed more than 400km beneath the surface to understand deep mantle processes. Kimberlites transport diamonds from the mantle to the surface; olivine chemistry records the deep rocks they sample and helps map mantle regions where diamonds were stored before ascent.

Our analysis

Independent reports quote researchers describing CLIPPIR diamonds as rare messengers from the deep mantle and note the potential for olivine chemistry to guide exploration. The articles emphasize the depth origin of the diamonds and the role of kimberlites in transporting them, with quotes highlighting the practical impact on mining exploration.

Go deeper

  • What new evidence would strengthen the link between olivine chemistry and CLIPPIR-bearing kimberlites?
  • Could this approach change where exploration companies invest next?
  • How soon might new discoveries follow from this method?

More on these topics

  • Botswana - Country in Southern Africa

    Botswana, officially the Republic of Botswana, is a landlocked country in Southern Africa. Formerly the British protectorate of Bechuanaland, Botswana adopted its name after becoming independent within the Commonwealth on 30 September 1966.

  • South Africa - Country in Southern Africa

    South Africa, officially the Republic of South Africa, is the southernmost country in Africa. With over 59 million people, it is the world's 24th-most populous nation and covers an area of 1,221,037 square kilometres.

  • Premier Mine - Mine in South Africa

    The Premier Mine is an underground diamond mine owned by Petra Diamonds in the town of Cullinan, 40 kilometres east of Pretoria, Gauteng Province, South Africa.

  • Sierra Leone - Country in West Africa

    Sierra Leone, officially the Republic of Sierra Leone, informally Salone, is a country on the southwest coast of West Africa. It is bordered by Liberia to the southeast and Guinea to the northeast.

  • Angola - Country in Central Africa

    Angola, officially the Republic of Angola, is a country on the west coast of Southern Africa. It is the seventh-largest country in Africa, bordered by Namibia to the south, the Democratic Republic of the Congo to the north, Zambia to the east, and the Atl

  • Earth - Planet

    Earth is the third planet from the Sun and the only astronomical object known to harbor life. According to radiometric dating estimation and other evidence, Earth formed over 4.5 billion years ago.

  • Africa - Continent

    Africa is the world's second-largest and second-most populous continent, after Asia. At about 30.3 million km² including adjacent islands, it covers 6% of Earth's total surface area and 20% of its land area.

  • Lesedi La Rona - Diamond

    Lesedi La Rona, formerly known in media as Karowe AK6 or as Quad 1 by the personnel at the mine, is the fourth-largest diamond ever found, and the third-largest of gem quality. It was found in the Karowe mine, in Botswana on 16 November 2015. British jewe

  • Cullinan - Diamond

    The Cullinan Diamond is the largest gem-quality rough diamond ever found, weighing 3,106.75 carats, discovered at the Premier No.2 mine in Cullinan, South Africa, on 26 January 1905. It was named after Thomas Cullinan, the mine's chairman.


Latest Headlines from Nourish | The Nourish Mission