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bgzlato.com Gold Prospecting Forum 2019-05-20T23:18:26+03:00 http://2011.java2days.com/feed.php?f=5&t=512 2019-05-20T23:18:26+03:00 2019-05-20T23:18:26+03:00 http://2011.java2days.com/viewtopic.php?t=512&p=12836#p12836 <![CDATA[Re: Кианит (kyanite)]]> Статистика: Публикувано на от Караташ — 20 Май 2019, 23:18

]]> 2019-05-20T20:39:54+03:00 2019-05-20T20:39:54+03:00 http://2011.java2days.com/viewtopic.php?t=512&p=12835#p12835 <![CDATA[Re: Кианит (kyanite)]]> Статистика: Публикувано на от любо — 20 Май 2019, 20:39

]]> 2019-05-20T15:18:18+03:00 2019-05-20T15:18:18+03:00 http://2011.java2days.com/viewtopic.php?t=512&p=12834#p12834 <![CDATA[Кианит (kyanite)]]> Като примеси кианитът съдържа :хром,желязо,титан,манган,калций и др.
Оцветяването му в различни кристалографски посоки се изменя от виолетовосиньо до безцветно и от кобалтовосин или жълтеникавозелено до зелено.
Кристализира в триклинна сингония и образува дългопризматични сплескани кристали.Има отлична цепителност.Намират се кристали и с ефекта „котешко око”.
Наименованието му произлиза от гръцката дума за син цвят кианос,а дистен значи двояк(В различните сечения).
Кианит за ювелирни цели се добива в Южна Африка,Мианмар,Русия,индия и др.
Кианит в България - гр.Чепеларе, вр. Горката (Кричимско), с. Дервишка могила - Сакар

Химическа формула (състав): Al2[SiO4]O
Цветове: безцветен,син,синьо-зелен,виолетов,черен,ряко се среща и розов
Твърдост: 4,5 по дължина и 6-7 напречно по скалата на Моос
Плътност:3,53-3,68 гр./см.куб.
Коефицент на пречупване 1,712 до 1,735
Двулом 0,017
Дисперсия 0,020
Плеохроитен е

Гранат-кианитов шистDSC_0311.JPG
Кианитови кристали в кварцIMG_4399.jpg
IMG_4387.jpg

Статистика: Публикувано на от Караташ — 20 Май 2019, 15:18

]]>