Question

write some features of amphibole.​

Answer 1

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Answer:

ʟᴏɴɢ ᴩʀɪꜱᴍᴀᴛɪᴄ, ᴀᴄɪᴄᴜʟᴀʀ, ᴏʀ ꜰɪʙʀᴏᴜꜱ ᴄʀyꜱᴛᴀʟ ʜᴀʙɪᴛ, ᴍᴏʜꜱ ʜᴀʀᴅɴᴇꜱꜱ ʙᴇᴛᴡᴇᴇɴ 5 ᴀɴᴅ 6, ᴀɴᴅ ᴛᴡᴏ ᴅɪʀᴇᴄᴛɪᴏɴꜱ ᴏꜰ ᴄʟᴇᴀᴠᴀɢᴇ ɪɴᴛᴇʀꜱᴇᴄᴛɪɴɢ ᴀᴛ ᴀᴩᴩʀᴏxɪᴍᴀᴛᴇʟy 56° ᴀɴᴅ 124° ɢᴇɴᴇʀᴀʟʟy ꜱᴜꜰꜰɪᴄᴇ ᴛᴏ ɪᴅᴇɴᴛɪꜰy ᴀᴍᴩʜɪʙᴏʟᴇꜱ ɪɴ ʜᴀɴᴅ ꜱᴩᴇᴄɪᴍᴇɴꜱ. ᴛʜᴇ ꜱᴩᴇᴄɪꜰɪᴄ ɢʀᴀᴠɪᴛy ᴠᴀʟᴜᴇꜱ ᴏꜰ ᴀᴍᴩʜɪʙᴏʟᴇꜱ ʀᴀɴɢᴇ ꜰʀᴏᴍ ᴀʙᴏᴜᴛ 2.9 ᴛᴏ 3.6.

Answer 2

Answer:

Long prismatic, acicular, or fibrous crystal habit, Mohs hardness between 5 and 6, and two directions of cleavage intersecting at approximately 56° and 124° generally suffice to identify amphiboles in hand specimens. The specific gravity values of amphiboles range from about 2.9 to 3.6.