Chalcopyrite - Revision history

Mukbil at 11:39, 18 September 2021

2021-09-18T11:39:16Z

← Older revision		Revision as of 11:39, 18 September 2021
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	'''Chalcopyrite''' ore mineral of copper; crystallises in the tetragonal crystal system, but crystals are generally small with diphenoidal faces resembling the tetrahedron; usually massive with a metallic lustre and brass or golden-yellow colour; shows greenish-black streaks, uneven fracture and indistinct cleavage; hardness is 3.5-4 on Moh';s scale and specific gravity is 4.1-4.3. Chalcopyrite is also known as copper pyrite or yellow pyrite and because of its physical appearance it is also called 'fools'; gold';. It occurs in mesothermal or hypothermic deposits. The upper part of the Rajmahal Traps has been highly weathered and there is indication of the presence of chalcopyrite and chalcocite in the rocks. However, chalcopyrite is not very stable as it has low hardness as compared to other heavy minerals and as such it is extremely rare in heavy mineral suites of various vertical sections of the Chittagong, Chittagong Hill Tracts and [[surma basin]] of Bangladesh and [[assam]] and [[tripura]] states of India. ~~[Sifatul Quader Chowdhury] [Chowdhury, Sifatul Quader Professor of Geology, Dhaka University]~~		'''Chalcopyrite''' ore mineral of copper; crystallises in the tetragonal crystal system, but crystals are generally small with diphenoidal faces resembling the tetrahedron; usually massive with a metallic lustre and brass or golden-yellow colour; shows greenish-black streaks, uneven fracture and indistinct cleavage; hardness is 3.5-4 on Moh's scale and specific gravity is 4.1-4.3. Chalcopyrite is also known as copper pyrite or yellow pyrite and because of its physical appearance it is also called 'fools' gold'. It occurs in mesothermal or hypothermic deposits. The upper part of the Rajmahal Traps has been highly weathered and there is indication of the presence of chalcopyrite and chalcocite in the rocks. However, chalcopyrite is not very stable as it has low hardness as compared to other heavy minerals and as such it is extremely rare in heavy mineral suites of various vertical sections of the Chittagong, Chittagong Hill Tracts and [[Surma Basin\|surma basin]] of Bangladesh and [[assam]] and [[tripura]] states of India.

	[[bn:চ্যালকোপাইরাইট]]		[[bn:চ্যালকোপাইরাইট]]

Nasirkhan: Content Updated.

2021-06-18T05:52:08Z

Content Updated.

← Older revision		Revision as of 05:52, 18 June 2021
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	~~<p class=Normal >~~'''Chalcopyrite''' ore mineral of copper; crystallises in the tetragonal crystal system, but crystals are generally small with diphenoidal faces resembling the tetrahedron; usually massive with a metallic lustre and brass or golden-yellow colour; shows greenish-black streaks, uneven fracture and indistinct cleavage; hardness is 3.5-4 on Moh';s scale and specific gravity is 4.1-4.3. Chalcopyrite is also known as copper pyrite or yellow pyrite and because of its physical appearance it is also called 'fools'; gold';. It occurs in mesothermal or hypothermic deposits. The upper part of the Rajmahal Traps has been highly weathered and there is indication of the presence of chalcopyrite and chalcocite in the rocks. However, chalcopyrite is not very stable as it has low hardness as compared to other heavy minerals and as such it is extremely rare in heavy mineral suites of various vertical sections of the Chittagong, Chittagong Hill Tracts and [[surma basin]] of Bangladesh and [[assam]] and [[tripura]] states of India. [Sifatul Quader Chowdhury] [Chowdhury, Sifatul Quader Professor of Geology, Dhaka University]		'''Chalcopyrite''' ore mineral of copper; crystallises in the tetragonal crystal system, but crystals are generally small with diphenoidal faces resembling the tetrahedron; usually massive with a metallic lustre and brass or golden-yellow colour; shows greenish-black streaks, uneven fracture and indistinct cleavage; hardness is 3.5-4 on Moh';s scale and specific gravity is 4.1-4.3. Chalcopyrite is also known as copper pyrite or yellow pyrite and because of its physical appearance it is also called 'fools'; gold';. It occurs in mesothermal or hypothermic deposits. The upper part of the Rajmahal Traps has been highly weathered and there is indication of the presence of chalcopyrite and chalcocite in the rocks. However, chalcopyrite is not very stable as it has low hardness as compared to other heavy minerals and as such it is extremely rare in heavy mineral suites of various vertical sections of the Chittagong, Chittagong Hill Tracts and [[surma basin]] of Bangladesh and [[assam]] and [[tripura]] states of India. [Sifatul Quader Chowdhury] [Chowdhury, Sifatul Quader Professor of Geology, Dhaka University]

	[[bn:চ্যালকোপাইরাইট]]		[[bn:চ্যালকোপাইরাইট]]

0:0:0:0:0:0:0:1: Content Updated.

2021-06-17T19:03:49Z

Content Updated.

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<p class=Normal >'''Chalcopyrite''' ore mineral of copper; crystallises in the tetragonal crystal system, but crystals are generally small with diphenoidal faces resembling the tetrahedron; usually massive with a metallic lustre and brass or golden-yellow colour; shows greenish-black streaks, uneven fracture and indistinct cleavage; hardness is 3.5-4 on Moh';s scale and specific gravity is 4.1-4.3. Chalcopyrite is also known as copper pyrite or yellow pyrite and because of its physical appearance it is also called 'fools'; gold';. It occurs in mesothermal or hypothermic deposits. The upper part of the Rajmahal Traps has been highly weathered and there is indication of the presence of chalcopyrite and chalcocite in the rocks. However, chalcopyrite is not very stable as it has low hardness as compared to other heavy minerals and as such it is extremely rare in heavy mineral suites of various vertical sections of the Chittagong, Chittagong Hill Tracts and [[surma basin]] of Bangladesh and [[assam]] and [[tripura]] states of India. [Sifatul Quader Chowdhury] [Chowdhury, Sifatul Quader Professor of Geology, Dhaka University]

[[bn:চ্যালকোপাইরাইট]]