T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 4 – Arkady Leokum<\/p>\n\n\n\n
C\u00e1t th\u1ef1c ch\u1ea5t ch\u1ec9 l\u00e0 nh\u1eefng vi\u00ean \u0111\u00e1 nh\u1ecf, l\u00e0 nh\u1eefng m\u1ea3nh v\u1ee5n ph\u00eda ngo\u00e0i t\u1ea3ng \u0111\u00e1 l\u1edbn va ch\u1ea1m v\u00e0o nhau trong kho\u1ea3ng th\u1eddi gian h\u00e0ng ch\u1ee5c tri\u1ec7u n\u0103m tr\u01b0\u1edbc. C\u0169ng c\u00f3 c\u00e1t do k\u1ebft qu\u1ea3 c\u1ee7a h\u00f3a ch\u1ea5t bi\u1ebfn th\u00e0nh b\u1ed9t m\u1ecbn v\u00e0 r\u1ed3i tr\u1edf th\u00e0nh \u201c\u0111\u1ea5t\u201d. Nh\u1eefng m\u1ea3nh v\u1ee5n qu\u00e1 c\u1ee9ng ho\u1eb7c kh\u00f4ng b\u1ecb t\u00e1c d\u1ee5ng c\u1ee7a h\u00f3a ch\u1ea5t th\u00ec v\u1eabn gi\u1eef nguy\u00ean d\u1ea1ng h\u1ea1t nho nh\u1ecf m\u00e0 ta g\u1ecdi l\u00e0 c\u00e1t. \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a nh\u1eefng h\u1ea1t c\u00e1t c\u00f3 th\u1ec3 x\u00ea x\u00edch t\u1eeb 1\/10 \u0111\u1ebfn 1\/100cm.<\/p>\n\n\n\n
Nh\u1eefng m\u1ea3nh \u0111\u00e1 v\u1ee5n \u0111\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u00e1c d\u00f2ng n\u01b0\u1edbc (su\u1ed1i, s\u00f4ng) l\u00f4i cu\u1ed1n r\u1ed3i \u0111\u1ed5 xu\u1ed1ng thung l\u0169ng ho\u1eb7c \u0111\u01b0a xu\u1ed1ng c\u00e1c l\u00f2ng s\u00f4ng, b\u1edd s\u00f4ng. Trong khi b\u1ecb l\u00f4i cu\u1ed1n \u0111i nh\u01b0 v\u1eady, nh\u1eefng vi\u00ean \u0111\u00e1, m\u1ea3nh \u0111\u00e1, s\u1ecfi l\u1edbn c\u0169ng c\u00f3 th\u1ec3 va ch\u1ea1m v\u00e0o nhau, v\u1ee1 ra v\u00e0 th\u00e0nh h\u1ea1t c\u00e1t nh\u1ecf h\u01a1n.<\/p>\n\n\n\n
D\u00f9ng k\u00ednh ph\u00f3ng \u0111\u1ea1i m\u00e0 nh\u00ecn ta s\u1ebd th\u1ea5y c\u00e1t l\u00e0 nh\u1eefng h\u1ea1t r\u1ea5t kh\u00e1c nhau. Nh\u1eefng h\u1ea1t c\u00e1t \u0111\u00f3 c\u1ee9ng nh\u1eb5n, kh\u00e1 tr\u00f2n, \u0111\u00f3 l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a s\u1ef1 m\u00e0i gi\u0169a trong qu\u00e1 tr\u00ecnh di chuy\u1ec3n d\u00e0i c\u1ecd x\u00e1t v\u1edbi nhau ho\u1eb7c do s\u00f3ng n\u01b0\u1edbc b\u00e0o m\u00f2n n\u1ebfu l\u00e0 c\u00e1t tr\u00ean c\u00e1c b\u1edd bi\u1ec3n. N\u1ebfu nh\u1eefng h\u1ea1t c\u00e1t c\u00f2n s\u1eafc c\u1ea1nh ho\u1eb7c \u0111\u1ed9 tr\u00f2n k\u00e9m th\u00ec \u0111\u00f3 l\u00e0 d\u1ea5u n\u00f3 m\u1edbi b\u1ecb v\u1ee1 ra ho\u1eb7c ch\u01b0a tr\u1ea3i qua m\u1ed9t qu\u00e1 tr\u00ecnh m\u00e0i gi\u0169a, va ch\u1ea1m.<\/p>\n\n\n\n
Th\u00f4ng th\u01b0\u1eddng th\u00ec m\u1ed7i h\u1ea1t c\u00e1t ch\u1ec9 g\u1ed3m m\u1ed9t lo\u1ea1i ch\u1ea5t kho\u00e1ng. Nh\u01b0ng n\u1ebfu b\u1ed1c m\u1ed9t n\u1eafm c\u00e1t th\u00ec b\u1ea1n s\u1ebd th\u1ea5y trong n\u1eafm c\u00e1t \u0111\u00f3 c\u00f3 nhi\u1ec1u h\u1ea1t c\u1ea5u t\u1ea1o b\u1edfi c\u00e1c kho\u00e1ng ch\u1ea5t kh\u00e1c nhau. Kho\u00e1ng ch\u1ea5t ph\u1ed5 bi\u1ebfn nh\u1ea5t trong c\u00e1t l\u00e0 th\u1ea1ch anh (quartz). N\u1ebfu trong h\u1ea1t c\u00e1t c\u00f3 h\u1ed7n h\u1ee3p s\u1eaft th\u00ec c\u00e1t \u0111\u00f3 c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u m\u00e0u. C\u00f3 c\u00e1t ch\u1ee9a nh\u1eefng kim lo\u1ea1i hi\u1ebfm nh\u01b0 v\u00e0ng, zircon, garnet. C\u00e1t tr\u1eafng th\u00ec h\u1ea7u nh\u01b0 l\u00e0 gypsum nguy\u00ean ch\u1ea5t (t\u1ee9c l\u00e0 m\u1ed9t lo\u1ea1i th\u1ea1ch cao).<\/p>\n\n\n\n
C\u00f3 nh\u1eefng lo\u1ea1i c\u00e1t c\u1ee9ng v\u00e0 d\u00ednh ch\u1eb7t \u0111\u1ebfn n\u1ed7i xe \u00f4 t\u00f4 ch\u1ea1y tr\u00ean \u0111\u00f3 \u0111\u01b0\u1ee3c. S\u1ef1 ki\u1ec7n n\u00e0y l\u00e0 do trong c\u00e1t c\u00f3 ch\u1ee9a m\u1ed9t l\u01b0\u1ee3ng n\u01b0\u1edbc v\u1eeba \u0111\u1ee7 gi\u1eefa \u201ckhe\u201d c\u00e1c h\u1ea1t c\u00e1t.<\/p>\n","protected":false},"excerpt":{"rendered":"
T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 4 – Arkady Leokum C\u00e1t th\u1ef1c ch\u1ea5t ch\u1ec9 l\u00e0 nh\u1eefng vi\u00ean \u0111\u00e1 nh\u1ecf, l\u00e0 nh\u1eefng m\u1ea3nh v\u1ee5n ph\u00eda ngo\u00e0i t\u1ea3ng \u0111\u00e1 l\u1edbn va ch\u1ea1m v\u00e0o nhau trong kho\u1ea3ng th\u1eddi gian h\u00e0ng ch\u1ee5c tri\u1ec7u n\u0103m tr\u01b0\u1edbc. C\u0169ng c\u00f3 c\u00e1t do k\u1ebft qu\u1ea3 c\u1ee7a h\u00f3a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15],"tags":[],"class_list":["post-14433","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/14433","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=14433"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/14433\/revisions"}],"predecessor-version":[{"id":14434,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/14433\/revisions\/14434"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=14433"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=14433"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=14433"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}