Labradorite ( Đá Xà Cừ )
Labradorite u0111u01b0u1ee3c ngu01b0u1eddi Viu1ec7t u0111u1eb7t cho mu1ed9t cu00e1i tu00ean mu1ef9 miu1ec1u lu00e0 Hu1eafc Nguyu1ec7t Quang u0111u01b0u1ee3c tu00ecm thu1ea5y u0111u1ea7u tiu00ean u1edf u0111u1ea3o Paul gu1ea7n thu1ecb tru1ea5n Nain u1edf Labrador, Canada. Sau u0111u00f3, nu00f3 cu0169ng u0111u00e3 u0111u01b0u1ee3c tu00ecm thu1ea5y u1edf Na Uy, Phu1ea7n Lan vu00e0 nhiu1ec1u u0111u1ecba u0111iu1ec3m khu00e1c tru00ean tou00e0n thu1ebf giu1edbi, u1edf mu1ed7i nu01a1i lu1ea1i cu00f3 u0111u1eb7c tu00ednh khu00e1c nhau. Nhu01b0ng u0111u1eb7c u0111iu1ec3m chung nhu1ea5t lu00e0 u0111u1ec1u thu1ec3 hiu1ec7n bu1ea3y su1eafc cu1ea7u vu1ed3ng du01b0u1edbi u00e1nh su00e1ng u0111u1ee7 mu1ea1nh tru00f4ng ru1ea5t u0111u1eb9p vu00e0 ku00edch thu00edch thu1ecb giu00e1c. Thu01b0u1eddng thu00ec mu00e0u su1eafc hay bu1eaft gu1eb7p nhu1ea5t cu1ee7a u0111u00e1 xu00e0 cu1eeb lu00e0 mu00e0u trong u0111en cu00f3 chu00fat mu00e0u nu00e2u. u0110u00e1 Labradorite cu00f3 thu00e0nh phu1ea7n hu00f3a hu1ecdc lu00e0 CaAl2Si2O8. u0110u00e1 cu00f3 u0111u1ed9 cu1ee9ng cao 6,0 u2013 6,5 (theo thang Mohs), nhu1edd vu1eady mu00e0 u0111u00e1 cu00f3 u0111u1ed9 bu1ec1n cao, chu1ecbu lu1ef1c tu1ed1t, u00edt bu1ecb chu1ea7y xu01b0u1edbc hay ru1ea1n nu1ee9t khi di chuyu1ec3n.
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