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Earth used to look like Mars. Here’s why that changed. | Robert Hazen

4 min • 9 maj 2025

### 🪨 **Minerals: The Silent Architects of Life**

*— A Mineralogist’s Perspective*

#### 💎 Minerals Are Everywhere

- They power our **technology**, **transport**, **agriculture**, and even **biology**.

- Every living thing on Earth depends on minerals — **you, me, and the food we eat**.

#### 🧠 Minerals Tell Stories

- Each mineral is a **time capsule**, holding clues to Earth’s **4.5-billion-year history**.

- They're **information-rich**, revealing how our planet evolved over time.

#### 🌱 The Origin of Life

- Life couldn’t have started without minerals:

→ They acted as **catalysts**, **reactants**, and **protective surfaces**

→ Essential for the chemistry that sparked life

#### 🌍 Earth’s Colorful Evolution

- **Black**: Born covered in dark basalt rock

- **Blue**: Rains and oceans gave rise to a water-covered world

- **Gray**: Plate tectonics created granite continents

- **Red**: Oxygen-rich life rusted the surface

- **White**: Ice Age turned the world into a frozen planet

- **Green**: Life colonized land, transforming Earth yet again

#### 🦴 Life and Minerals Co-Evolved

- Life didn’t just adapt **on Earth** — it adapted **with Earth**.

- Minerals gave us:

→ **Shells, teeth, bones**

→ The tools for survival and evolution

- This is the story of **the geosphere and biosphere evolving together**.

### 🔁 Final Thought:

> “We wouldn’t be here talking about minerals...

> **if minerals hadn’t made us possible.**”

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