লক্ষ্য করুন: এই এন্ট্রির অনুবাদ বর্তমানে মান পর্যালোচনার অধীনে রয়েছে, তাই কিছু বিষয়বস্তু সাময়িকভাবে শুধুমাত্র ইংরেজিতে প্রদর্শিত হচ্ছে।
এই এন্ট্রিটি এখনও আপনার ভাষায় অনুবাদ করা হয়নি, তাই নিচে মূল লেখাটি দেখানো হচ্ছে।
pegmatite
This term is a specialized geological descriptor used primarily in petrology and mineralogy. It describes a specific texture rather than just a chemical composition, referring to the coarse-grained nature of the rock where crystals are visibly large, often exceeding one centimeter in diameter.
In a professional context, it is frequently associated with the discovery of rare minerals or gemstones, as the slow cooling process of pegmatitic magma allows for the growth of exceptionally large and pure crystals. It is used almost exclusively in scientific or industrial mining contexts and is rarely encountered in general conversation.
Meanings
Examples
The sample of pegmatite showed remarkably large crystals of tourmaline.
The sample of pegmatite showed remarkably large crystals of tourmaline.
Look at this vein of pegmatite cutting through the granite.
Pegmatite often contains rare elements that are not found in other igneous rocks.
I wonder if this pegmatite deposit contains any beryl.
The mining company focused its efforts on the lithium rich pegmatite.
We found a massive pegmatite dike during the field survey.
The coarse texture of pegmatite is a result of slow cooling and high water content.
Is this a piece of pegmatite or just a coarse granite?