{
  "id": 10275043,
  "title": "Why volcanic crystals are black boxes for tracking magma's journey to the Earth's surface",
  "url": "https://urgent.news/2026/09/27/why-volcanic-crystals-are-black-boxes-for-tracking-magmas-journey-to",
  "topic": "world",
  "section": "World",
  "published": "2026-09-27T19:00:01.000Z",
  "source": {
    "name": "Phys.org",
    "slug": "phys-org",
    "url": "https://phys.org/news/2026-09-volcanic-crystals-black-tracking-magma.html"
  },
  "original_language": "en",
  "account": "Volcanic eruptions begin deep underground, often before they are detected by surface monitoring systems. This is where crystals from the magma become crucial. These crystals, known as clinopyroxene, record the history of a volcano by storing information about temperature, depth and chemical conditions as they form within the magma. In a recent study published in Nature Communications, researchers analyzed clinopyroxene crystals from eruptions on the island of La Palma in the Canary Islands. These crystals revealed a hidden reservoir of magma mush, a thick mixture of solid crystals and liquid, located 18 to 25 kilometers beneath the Earth's surface. This deep reservoir remained dormant for centuries, gradually accumulating layers of crystal history. As magma rose closer to the surface, these crystals showed signs of change - indicating the magma's journey. The outer layers of the crystals changed chemistry as the hotter magma from below met them, while the outermost rings captured the rapid ascent of magma towards the eruption site. This study highlights the importance of understanding what lies beneath the Earth's surface to better predict and prepare for volcanic eruptions.",
  "summary": "When we think of a volcanic eruption, rivers of glowing lava or giant columns of ash come to mind. But beneath Earth's surface, a more complex story is unfolding. Magma deep within volcanoes is more than molten rock. It is a thick mixture of melted rock and solid mineral crystals known as \"magma mush\". To picture it, imagine a semi-frozen granita: a slushy blend of solid ice crystals suspended in…",
  "key_points": [
    "Clinopyroxene crystals record magma's temperature, depth, and chemistry.",
    "Study on La Palma eruptions reveals hidden magma mush 18-25 km deep.",
    "Crystals show signs of change as magma rises, indicating journey."
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}