




Scoria is a type of volcanic rock that forms when lava cools quickly. It is usually dark in color and has lots of small holes. People use scoria in gardening and landscaping to help soil retain water.
The Scoria is a dark, porous volcanic rock known for its rough, bubbly texture. It often appears black, dark gray, or reddish-brown, looking like hardened lava foam. Its many holes, created by trapped gas bubbles, make it visually distinct and surprisingly lightweight.





Category
MineralRarity
Rare
Danger
2/5 · Low
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Did you know some ancient peoples used rocks like scoria to make surprisingly strong and lightweight concrete?
Scientists use scoria in special labs to practice for missions to Mars, as it resembles the Martian surface!
Scoria forms in fiery volcanic eruptions when gas-rich lava rapidly cools and solidifies!
This rock can sometimes float on water, acting like a natural raft due to its many trapped air pockets!
Scoria has a very low density due to its trapped gas bubbles, making it an excellent lightweight material for construction.
Scoria's interconnected pores make it great for filtering water or improving soil drainage in gardens.
Scoria can absorb and retain heat well, which makes it useful in fire pits, barbecues, and sauna rocks.
Igneous rocks are formed from the cooling and solidification of molten rock (magma or lava).
Vitreous luster describes a mineral's appearance when reflecting light, resembling glass, often translucent or transparent.
A geode is a hollow, spherical rock formation lined with inward-growing crystals or concentric banding, often found in volcanic or sedimentary rocks.
Crystalline describes a mineral or rock composed of crystals, often exhibiting a regular atomic structure and geometric external form.
Natural refers to organisms, materials, or phenomena existing or produced by nature, not artificially created.
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Danger
2/5 · Low
Scoria is generally safe to handle, but be cautious with sharp edges.
black, dark gray, reddish-brown
5
dull
1.2
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