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Minerals

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A mineral is a naturally occurring chemical compound usually of crystalline form and not produced by life processes. A mineral has one specific chemical composition, whereas a rock can be an aggregate of different minerals or mineraloids. The study of minerals is called mineralogy. To meet the definition of “mineral” used by most geologists, a substance must meet five requirements:

Borax

Borax, also known as sodium borate or sodium tetraborate, is a naturally occurring mineral that has been used for various purposes throughout history. It...

Hiddenite

Hiddenite is a fascinating gemstone that belongs to the mineral family of spodumene. It is a green variety of spodumene and is named after...

Opalized Wood

Opalized wood is a fascinating and rare form of fossilized wood that has undergone a unique process of mineralization. It is a type of...

Padparadscha Sapphire

Padparadscha sapphire is a rare and highly sought-after variety of the mineral corundum, which is composed of aluminum oxide with trace elements that give...

Pietersite

Pietersite is a unique and striking gemstone known for its captivating chatoyancy and vibrant color variations. It is a type of chalcedony, which is...

Spectrolite

Spectrolite is a unique and captivating gemstone that belongs to the feldspar mineral group. It is renowned for its striking play of colors, which...

Hessonite

Hessonite, also known as Gomed or Gomedh, is a gemstone that belongs to the mineral species of Grossular Garnet. It is a variety of...

Goshenite

Goshenite is a variety of the mineral beryl and is known for its transparent and colorless appearance. It is one of the several gemstone...

Uvarovite

Uvarovite is a rare and valuable member of the garnet mineral group. It is named after Russian statesman and mineral collector Count Sergey Semenovitch...

Tsavorite

Tsavorite is a gemstone that belongs to the garnet family. It is known for its stunning green color, which ranges from a vivid, intense...

Charoite

Charoite is a rare and captivating mineral known for its distinctive purple color and intricate patterns. It is named after the Chara River in...

Heliodor

Heliodor is a rare and precious gemstone, classified as a natural variety of beryl. Known for its chemical composition of beryllium aluminum silicate, it...

15 Naturally Striped and Banded Rocks

Some rocks in nature display remarkable patterns of stripes, wavy bands, and contrasting layers, almost as if they had been painted by an artist....

Rocks That Float on Water: Types, Formation, and Examples

When you drop a rock into water, you usually expect it to sink. Most rocks are denser than water, so they quickly settle to...

Why Is My Rock Magnetic? 8 Common Magnetic Rocks and Minerals

When you bring a magnet close to a rock and notice that it is strongly attracted, the result can be surprising. If the rock...