mineral
Tree Agate
Silica (SiO2) with Chlorite inclusions
Hardness: 6.5-7 (Mohs); Color: White with green dendritic/branch-like patterns; Luster: Vitreous to waxy; Crystal Structure: Trigonal (Microcrystalline); Cleavage: None; Specific Gravity: 2.58-2.64
- Hardness
- 6
- Color
- White with green dendritic/branch-like patterns
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 (Mohs); Color: White with green dendritic/branch-like patterns; Luster: Vitreous to waxy; Crystal Structure: Trigonal (Microcrystalline); Cleavage: None; Specific Gravity: 2.58-2.64
Formation & geological history
Formed in cavities of volcanic rocks where silica-rich groundwater deposits layers of chalcedony. The green patterns are dendritic inclusions of Chlorite or Manganese minerals.
Uses & applications
Primarily used for ornamental carvings, polished spheres, jewelry (cabochons), and as a popular specimen for crystal collectors.
Geological facts
Unlike Moss Agate which is translucent, Tree Agate is typically opaque white. The name is derived from the Greek word 'dendros' meaning tree, referring to its plant-like inclusions.
Field identification & locations
Identified by its opaque white base and distinct green veining that looks like moss or foliage. Common locations include Brazil, India, and the USA.
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![Green Apatite on Albite (Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]) — mineral](https://media.rockidentification.com/2391a63f-fb20-47d5-af9a-2035851eb32e-thumbnail.jpg)
Green Apatite on Albite
Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]
mineral