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.
- ripple-fired
- ripple-firing
- ripple-flaked
- ripple-flaking
- ripple grass
- rippleless
- ripple marks
- ripple pony cloth
- rippler
- ripple sole
- ripple-soled
- ripple stitch
- ripplet
- ripple-through
- ripple-through counter
- ripple ware
- rippling comb
- rippling machine
- ripply
- riprap
- ripresa
- rip-roaring
- rip-roaringly
- riproarious
- riproariously