Agate
Definition
A microcrystalline variety of quartz, representing a form of chalcedony that is structurally characterized by concentric or parallel bands of different colors and opacities arranged in successive layers. Geologically, it forms within the cavities of volcanic rocks (geodes) through the rhythmic deposition of silica from hydrothermal solutions, being widely used in crafting decorative objects, luxury jewelry, and as precision bearings in mechanics.
Bilingual Equivalents
- Agate
- Banded chalcedony
Grammatical & Source Details
| Inflection Type | Neuter noun, regular structural morphological variations. |
| Formation | Modern loanword from French ('agate'), originally from Ancient Greek 'achates', named after the Dirillo River in Sicily where it was first found. |
| Spelling / Pronunciation | [ˈæɡ.ət] |
| Source | Encyclopedia of Mineralogy and Crystalline Structural Analysis |
Contextual Usage Examples
RO: Inelul vechi era împodobit cu un agat șlefuit ce prezenta straturi alternative de un roșu-cărămiziu și alb.
EN: The old ring was adorned with a polished agate displaying alternating layers of brick-red and white.
RO: Minerul a tăiat geoda în două, dezvăluind o structură spectaculoasă de agat formată de-a lungul mileniilor.
EN: The miner sliced the geode in half, revealing a spectacular agate structure formed over millennia.
RO: Analiza de laborator a demonstrat că acest agat conține incluziuni filamentoase de oxid de fier.
EN: Laboratory analysis demonstrated that this agate contains filamentous inclusions of iron oxide.
Idioms & Phrases
Structură zonată de agat / Agate banded structure
RO: Configurație texturală cristalină caracterizată prin linii paralele fine generate de variațiile de compoziție din soluție.
EN: A crystalline textural configuration characterized by fine parallel lines generated by composition variations in the solution.
Geodă de agat / Agate geode
RO: Formațiune stâncoasă cavitară căptușită structural la interior cu straturi succesive de minerale silicioase colorate.
EN: A hollow rock formation structurally lined on the inside with successive layers of colored siliceous minerals.
Agat mușchiform / Moss agate
RO: Varietate de calcedonie transparentă care conține incluziuni dendritice verzi ce imită structural aspectul mușchiului de pădure.
EN: A variety of transparent chalcedony containing green dendritic inclusions that structurally mimic the appearance of forest moss.
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