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Rocks, minerals & gems By Ren

A closer look at the ground we stand on.

Fresh finds, mineral science, gems, and the stories behind the specimens — for curious collectors and lifelong learners.

02 / The archive

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117 stories in Rockhounding Clear filters

Tourmaline Requires Extra Boron at High Temps

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Higher temperatures demand higher boron concentrations for stable Mg‑rich tourmaline under hydrothermal conditions.

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Mg‑Rich Tourmaline Needs More Boron at Higher Temperatures

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Experiments show forming magnesium‑rich tourmaline requires more boron when temperatures rise.

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IMA Commission Newsletter 93 Outlines Updated Mineral Nomenclature

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The European Journal of Mineralogy publishes the latest IMA newsletter detailing new guidelines on mineral naming and classification.

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European Journal Publishes Tourmaline Study, FTIR Methods, and IMA Update

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European Journal publishes tourmaline study, new FTIR methods, and IMA update.

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New FTIR Technique Enhances OH Analysis in Pyroxene

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Researchers unveil an advanced Fourier‑transform infrared method that captures angle‑resolved polarized spectra of anisotropic minerals like pyroxenes, improving water content quantification.

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Tourmaline Stability Depends on Boron Levels Under Hydrothermal Conditions

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Researchers found that forming Mg‑rich tourmaline requires increasing boron concentrations as temperature rises.

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Nanoporous Ellipsoid Hematite Synthesized via Hydrothermal Growth

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A new study shows that hydrothermal synthesis can produce nanoporous ellipsoidal hematite with a 27‑nm pore size through controlled dehydration of iron oxyhydroxide intermediates.

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New Mineral Species and Advanced Spectroscopy Methods Announced

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The European Journal of Mineralogy has released three studies detailing a new mineral species classification effort, improved FTIR techniques, and hydrothermal synthesis of nanoporous hematite.

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Express Middleware Disables Client-Side Caching

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The nocache package for Express disables client-side caching via HTTP headers and was released as version 4.0.0 in October 2016.

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IMA Releases Updated Mineral Nomenclature Guidelines

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The International Mineralogical Association’s CNMNC issued Newsletter 93 detailing revised rules for naming new minerals and refining classification practices.

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New FTIR Method Improves Water Measurement in Pyroxenes

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A new approach uses many angle‑resolved polarized spectra on pyroxenes to reduce water measurement error.

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New Studies Reveal Nano‑Porous Hematite and Rare Lawsonite Eclogites

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Three recent European Journal of Mineralogy papers detail new hematite synthesis, rare lawsonite eclogites in Turkey, and infrared analysis of aragonite‑group carbonates.

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