astrophyllite
/əˈstrɒfɪlʌɪt/Mineralogy
noun
A yellow to brownish-red mineral typically occurring as thin, elongated crystals, often in star-shaped aggregates.
- Astrophyllite is a silicate of iron, titanium, manganese, and other metals, (K,Na)3(Fe,Mn)7Ti2Si8O24(O,OH)7. Crystal system: triclinic..
Origin
Mid 19th century; earliest use found in Reports of the British Association for the Advancement of Science. From astro- + -phyllite, after German Astrophyllit.
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