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2. Kyanite - Wikipedia

   en.wikipedia.org/wiki/Kyanite

   Kyanite is a typically blue aluminosilicate mineral, found in aluminium-rich metamorphic pegmatites and sedimentary rock. It is the high pressure polymorph of andalusite and sillimanite , and the presence of kyanite in metamorphic rocks generally indicates metamorphism deep in the Earth's crust .

3. Carnallite - Wikipedia

   en.wikipedia.org/wiki/Carnallite

   Carnallite (also carnalite) is an evaporite mineral, a hydrated potassium magnesium chloride with formula KCl.MgCl 2 ·6(H 2 O). It is variably colored yellow to white, reddish, and sometimes colorless or blue.

4. Kainite - Wikipedia

   en.wikipedia.org/wiki/Kainite

   Kainite (/ ˈ k aɪ n aɪ t / or / ˈ k eɪ n aɪ t /) [4] (KMg(SO 4)Cl·3H 2 O) is an evaporite mineral in the class of "Sulfates (selenates, etc.) with additional anions, with H 2 O" according to the Nickel–Strunz classification.

5. Eclogite - Wikipedia

   en.wikipedia.org/wiki/Eclogite

   The sky-blue crystals are kyanite. Minor white quartz is present, presumably from the recrystallization of coesite. A few gold-white phengite patches can be seen at the top. A 23 millimetres (0.91 in) coin added for scale.

6. Omphacite - Wikipedia

   en.wikipedia.org/wiki/Omphacite

   Associated minerals in eclogites except the major minerals include rutile, kyanite, phengite, and lawsonite. Minerals such as glaucophane, lawsonite, titanite, and epidote occur with omphacite in blueschist facies metamorphic rocks.

7. Silicate mineral - Wikipedia

   en.wikipedia.org/wiki/Silicate_mineral

   Kyanite crystals (unknown scale) Al 2 SiO 5 group Andalusite – Al 2 SiO 5; ... muscovite (red: Si, blue: O) Phyllosilicate, single net of tetrahedra with 4-membered ...