Homilite
A variety of Minerals
What is Homilite?
Homilite is a borosilicate mineral belonging to the gadolinite group of minerals with formula Ca2(Fe,Mg)B2Si2O10. It occurs as brown monoclinic crystals (space group P21/a) within feldspar masses in pegmatite and was discovered in 1876 in Stoko island, Langesundfiord, Norway. The name is from the Greek for to occur together, in allusion to its association with meliphanite and allanite.
Homilite Market Value Calculator
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Homilite Localities Map
See where Homilite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Map preview
North ZoneCentral RidgeSouth Basin
Quick Facts
Physical Properties
- Color
- Greenish black to brownish black
- Hardness (Mohs)
- 5 - 5.5
- Density
- 3.34 g/cm³
- Streak
- Grey
Chemical Properties
- Chemical Formula
- Ca2(Fe2+,Mg)B2Si2O10
- Elements
- B, Ca, Fe, Mg, O, Si
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