Aug 09, 2011· معلومات عن المعادن; If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.
علم المعادن الطبيعي. علم المعادن الطبيعي is the specific focus on physical attributes of minerals. Description of physical attributes is the simplest way to identify, classify, and categorize minerals, and they include: يمكننا أن ننظر إلى المعادن – بصفة عامة – على أنها المواد التي تتكون منها صخور ...