{"id":93,"date":"2024-04-04T06:11:43","date_gmt":"2024-04-04T03:11:43","guid":{"rendered":"https:\/\/sisu.ut.ee\/mineraalid-ja-kivimid\/kristallide-kuju\/"},"modified":"2024-04-04T06:13:04","modified_gmt":"2024-04-04T03:13:04","slug":"kristallide-kuju","status":"publish","type":"page","link":"https:\/\/sisu.ut.ee\/mineraalid-ja-kivimid\/kristallide-kuju\/","title":{"rendered":"Kristallide kuju"},"content":{"rendered":"

\n\tKristallide kuju<\/b>\u00a0on paljudele mineraalidele \u00fcheks t\u00e4htsamaks v\u00e4liseks tunnuseks. Nii on\u00a0<\/font><\/font>kvartsile (m\u00e4ekristallile)<\/a>\u00a0iseloomulikud prismalised kristallid,\u00a0<\/font><\/font>p\u00fcriidile<\/a>\u00a0kuubilised kristallid,\u00a0<\/font><\/font>magnetiidile<\/a>\u00a0oktaeedrid,\u00a0<\/font><\/font>granaadile<\/a>\u00a0romboeedrid jne. V\u00e4lise kuju (haabituse) j\u00e4rgi eristatakse isomeetrilisi kristalle (n\u00e4iteks teemant, granaat), piklikke kristalle (<\/font><\/font>turmaliin<\/a>), tahveljaid kristalle (<\/font><\/font>bar\u00fc\u00fct<\/a>,\u00a0<\/font><\/font>kips<\/a>), lehelisi (<\/font><\/font>vilgud<\/a>), ja \u00fcleminekulisi vorme, n\u00e4iteks vaadikujulised kristallid (safiir). Kivimites esinevatel mineraalidel on aga harva v\u00f5imalik m\u00e4\u00e4rata kristallide kuju palja silmaga. Selleks kasutatakse optilisi uurimismeetodeid.<\/font><\/font>\n<\/p>\n

\n\tMorfoloogiliste tunnuste hulka kuuluvad ka kahe v\u00f5i enama kristalli seadusp\u00e4rased kokku- ja l\u00e4bikasved ehk\u00a0kaksikud<\/b>\u00a0(n\u00e4iteks\u00a0<\/font>ortoklassil<\/a>, stauroliidil,\u00a0<\/font>kipsil<\/a>). Looduses on kristallide v\u00e4liskuju siiski enamasti ebat\u00e4iuslik.<\/font>\n<\/p>\n

\n\tPeale kristalliindiviidide kuju on m\u00f5nedele mineraalagregaatidele omane samuti iseloomulik v\u00e4liskuju. Nii esineb\u00a0<\/font>malahhiit<\/a>\u00a0sageli neerukujuliste kobaratena,\u00a0<\/font>ehe kuld<\/a>,\u00a0<\/font>h\u00f5be<\/a>\u00a0ja\u00a0<\/font>vask<\/a>\u00a0puuoksi meenutavate dendriitidena,\u00a0<\/font>kips<\/a>\u00a0kiuliste kristallide kogumikena,\u00a0<\/font>aragoniit herneteralaadse ehk<\/a>\u00a0<\/font>ooliitsena<\/a>, n\u00f5rgvormidena esinevad\u00a0<\/font>stalaktiidid<\/a>\u00a0jne.<\/font>\n<\/p>\n

\n\t\u00a0\n<\/p>\n

\n\t
Koostanud \u00a9 2003 Mare Isakar<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Kristallide kuju\u00a0on paljudele mineraalidele \u00fcheks t\u00e4htsamaks v\u00e4liseks tunnuseks. Nii on\u00a0kvartsile (m\u00e4ekristallile)\u00a0iseloomulikud prismalised kristallid,\u00a0p\u00fcriidile\u00a0kuubilised kristallid,\u00a0magnetiidile\u00a0oktaeedrid,\u00a0granaadile\u00a0romboeedrid jne. V\u00e4lise kuju (haabituse) j\u00e4rgi eristatakse isomeetrilisi kristalle (n\u00e4iteks teemant, granaat), piklikke kristalle (turmaliin), tahveljaid kristalle (bar\u00fc\u00fct,\u00a0kips), lehelisi (vilgud), ja \u00fcleminekulisi vorme, n\u00e4iteks vaadikujulised kristallid (safiir). …<\/p>\n","protected":false},"author":226,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-93","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/sisu.ut.ee\/mineraalid-ja-kivimid\/wp-json\/wp\/v2\/pages\/93","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sisu.ut.ee\/mineraalid-ja-kivimid\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sisu.ut.ee\/mineraalid-ja-kivimid\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sisu.ut.ee\/mineraalid-ja-kivimid\/wp-json\/wp\/v2\/users\/226"}],"replies":[{"embeddable":true,"href":"https:\/\/sisu.ut.ee\/mineraalid-ja-kivimid\/wp-json\/wp\/v2\/comments?post=93"}],"version-history":[{"count":1,"href":"https:\/\/sisu.ut.ee\/mineraalid-ja-kivimid\/wp-json\/wp\/v2\/pages\/93\/revisions"}],"predecessor-version":[{"id":760,"href":"https:\/\/sisu.ut.ee\/mineraalid-ja-kivimid\/wp-json\/wp\/v2\/pages\/93\/revisions\/760"}],"wp:attachment":[{"href":"https:\/\/sisu.ut.ee\/mineraalid-ja-kivimid\/wp-json\/wp\/v2\/media?parent=93"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}