Mineralogy Database

Isotropic Minerals sorted by Index of Refraction

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   242 Optically Isotropic Minerals Between 0 RI and 4 RI

Color
Refractive Index
Hardness
Density
Cleavage
Other Properties

( Bold - Valid Mineral Name)
(* - Mineral Name is Not IMA Approved)
(! - New Dana Classification Number Has Been Changed or Added)
(? - IMA Discredited Mineral Species Name)
(# - Grandfathered as valid)

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Mouse-over Mineral Name for IMA Status
Mineral Name n Sign Diaphaneity Reference
Walfordite ! 2.17    I Translucent MinRec, Vol 31, No 4
Zirkelite  2.19    I Subtranslucent to opaque AntBidBlaNic3
Bideauxite  2.192    I Transparent Enc. of Minerals,2nd ed.,1990
Miersite # 2.2    I Transparent to subtranslucent Ford32
Isolueshite ! 2.2    I Opaque to subtranslucent MinRec, v 29, p 236
Samarskite-(Y) # 2.2    I Opaque Enc. of Minerals,2nd ed.,1990
Thorianite # 2.2 to 2.35    I Opaque AntBidBlaNic3
Aeschynite-(Nd)  2.2 to 2.4    I Subtranslucent Enc. of Minerals,2nd ed.,1990
Kobeite-(Y) # 2.205    I Transparent to Translucent AntBidBlaNic3
Zirconolite  2.22    I Dana8
Kimrobinsonite  2.23    I Translucent Enc. of Minerals,2nd ed.,1990
Bunsenite # 2.23    I Translucent to opaque Ford32
Brannerite # 2.23 to 2.3    I Opaque to subtranslucent AntBidBlaNic3
Elsmoreite ! 2.24    I Translucent AmMin, v91, p217
Bromargyrite # 2.25    I Transparent to translucent Ford32
Polycrase-(Y) # 2.25    I Subtranslucent to Opaque AntBidBlaNic3
Nioboaeschynite-(Ce)  2.26    I Subtranslucent Enc. of Minerals,2nd ed.,1990
Aeschynite-(Ce) # 2.26    I Transparent to translucent Enc. of Minerals,2nd ed.,1990
Loparite-(Ce) # 2.26 to 2.38    I Opaque AntBidBlaNic3
Jixianite  2.262 to 2.315    I Transparent Enc. of Minerals,2nd ed.,1990
Lafossaite ! 2.264    I Translucent AmMin, v91, p1455
Jacobsite # 2.3    I Opaque AntBidBlaNic3
Davidite-(La) # 2.3    I Opaque AntBidBlaNic3
Orthobrannerite  2.328    I Enc. of Minerals,2nd ed.,1990
Winstanleyite  2.34    I Transparent Enc. of Minerals,2nd ed.,1990
Marshite # 2.346    I Transparent to subtranslucent Ford32
Tazheranite  2.35    I Enc. of Minerals,2nd ed.,1990
Franklinite # 2.36    I Opaque AntBidBlaNic1
Sphalerite # 2.37 to 2.43    I Translucent to transparent AntBidBlaNic1
Magnesioferrite # 2.38    I Opaque AntBidBlaNic3
Diamond # 2.4175 to 2.4178    I Transparent to Subtransparent to translucent Enc. of Minerals,2nd ed.,1990
Magnetite # 2.42    I Opaque AntBidBlaNic3
Eglestonite # 2.49    I Transparent to translucent Enc. of Minerals,2nd ed.,1990
Corderoite  2.5    I AntBidBlaNic1
Sillenite # 2.5    I Transparent to Translucent Dana8
Stilleite # 2.5    I Translucent to Opaque AntBidBlaNic1
Hauerite # 2.69    I Opaque AntBidBlaNic1
Alabandite # 2.7    I Opaque AntBidBlaNic1
Tennantite # 2.72    I Opaque AntBidBlaNic1
Tetrahedrite # 2.72    I Opaque AntBidBlaNic1
Cuprite # 2.85    I Transparent to translucent AntBidBlaNic3