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Volcanic olivine soil with "hair" crystals, also known as **Pele's hair**, 2 ml. , are delicate, golden strands of volcanic glass formed during high-energy lava fountaining in Hawaii. Named after **Pele**, the Hawaiian goddess of volcanoes, these fibers are created when molten lava is stretched into thin strands by wind or gas jets.
While **olivine** (a green magnesium-iron silicate mineral) is common in Hawaiian basalts, Pele's hair itself is primarily volcanic glass (not crystalline olivine). However, tiny olivine crystals can sometimes be embedded within the strands or found nearby as **Pele's tears** (small lava droplets).
These fragile formations are found near active vents, like those on **Kīlauea**, and are a fascinating example of nature's ability to create delicate structures from violent eruptions.
Pele’s hair (volcanic glass fibers) and associated **olivine crystals** hold notable geological significance:
### **1. Eruption Dynamics**
- Formed during **high-energy lava fountaining** (typical of Hawaiian *Strombolian* or *fire-fountaining* eruptions).
- Their delicate structure indicates **rapid cooling and low viscosity lava** (basaltic, rich in olivine).
- Wind dispersal helps track eruption intensity and direction.
### **2. Mantle Composition Clues**
- Olivine is a key **mantle mineral**; its presence in Hawaiian lavas suggests deep magma sources (from the **plume-fed hotspot**).
- Chemical composition (e.g., high magnesium/iron ratios) reveals mantle melting processes.
### **3. Volcanic Hazards**
- Pele’s hair is lightweight and can travel **miles**, posing respiratory risks (sharp fibers irritate lungs and eyes).
- Accumulations can ignite fires or damage machinery (e.g., aircraft engines).
### **4. Comparative Planetology**
- Similar features found on **Mars** and **Io** (Jupiter’s moon) suggest analogous volcanic processes elsewhere in the solar system.
### **5. Cultural & Environmental Role**
- In Hawaiian tradition, Pele’s hair symbolizes the goddess’s presence.
- Olivine-rich lava weathers into fertile soil, supporting Hawaii’s ecosystems.
