hellandite
/ˈhɛlɪndʌɪt/Mineralogy
noun
Any of a group of minerals found as brownish-red prismatic crystals in pegmatite veins in Norway and other localities including parts of Canada and California.
- Hellandites are hydrous borosilicates of rare earth elements and calcium, also containing aluminium, manganese, and iron, (Ca, REE, Th)6 (Al, Fe+3) Si4B4O22(OH)4 (where REE = rare earth element). Crystal system: monoclinic..
Origin
Early 20th century; earliest use found in Journal of the Chemical Society. From German Hellandit from the name of A. T. Helland, Norwegian geologist + German -it.
- off-off-Broadway
- off-off Broadway
- off-off-off Broadway
- off one's chump
- off one's face
- off one's feed
- off one's feet
- off one's nana
- off one's nut
- off one's own bat
- off one's rocker
- off one's scone
- off one's trolley
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