 |
Uniaxial Minerals sorted by Index of Refraction |
|
|
Uniaxial Minerals sorted by Index of Refraction |
( 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)
Pages: [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ] [ 6 ] [ 7 ] [ 8 ] Optical Help
| Mineral Name | A | B | Sign | Bire | Pleo- chroic |
Dispersion |
| Berezanskite ! | 1.63 ε | 1.635 ω | U- | .0050 | Yes | |
| Hauckite | 1.63 ω | 1.638 ε | U+ | .0080 | Yes | |
| Takedaite | 1.63 ε | 1.726 ω | U- | .0960 | No | |
| Calcioburbankite | 1.631 ε | 1.636 ω | U- | .0050 | No | |
| Georgbarsanovite ! | 1.631 ε | 1.639 ω | U- | .0080 | Yes | anomalously biaxial |
| Faheyite # | 1.631 ω | 1.652 ε | U+ | .0210 | No | |
| Brizziite-III | 1.631 ε | 1.84 ω | U- | .2090 | Yes | |
| Brizziite-VII | 1.631 ε | 1.84 ω | U- | .2090 | Yes | |
| Svanbergite # | 1.631 to 1.635 ω | 1.646 to 1.649 ε | U+ | .0150 | No | |
| Kahlerite # | 1.632 ε | 1.634 ω | U- | .0020 | No | |
| Akermanite # | 1.632 ω | 1.64 ε | U+ | .0080 | No | |
| Schorl ! | 1.633 to 1.64 ε | 1.66 to 1.672 ω | U- | .0270 to .0320 | Yes | |
| Mccrillisite | 1.634 ω | 1.645 ε | U+ | .0110 | No | |
| Carbokentbrooksite ! | 1.635 ε | 1.645 ω | U- | .0100 | Yes | |
| Zapatalite | 1.635 ε | 1.646 ω | U- | .0110 | Yes | |
| Belovite-(La) ! | 1.635 ε | 1.653 ω | U- | .0180 | No | |
| Olenite ! | 1.635 ε | 1.654 ω | U- | .0190 | Yes | |
| Rorisite | 1.635 ε | 1.668 ω | U- | .0330 | No | |
| Mahnertite ! | 1.635 ε | 1.686 ω | U- | .0510 | No | |
| Woodhouseite # | 1.636 ω | 1.647 ε | U+ | .0110 | No | |
| Aminoffite # | 1.637 ε | 1.647 ω | U- | .0100 | No | |
| Johnsenite-(Ce) ! | 1.637 ε | 1.648 ω | U- | .0110 | Yes | |
| Zirsilite-(Ce) ! | 1.637 ε | 1.648 ω | U- | .0110 | Yes | |
| Fluorcaphite ! | 1.637 ε | 1.649 ω | U- | .0120 | Yes | |
| Apatite-(SrOH) | 1.637 ε | 1.651 ω | U- | .0140 | No | |
| Taseqite ! | 1.6378 ε | 1.6494 ω | U- | .0116 | No | |
| Astrocyanite-(Ce) | 1.638 ε | 1.688 ω | U- | .0500 | Yes | |
| Kellyite | 1.639 ε | 1.646 ω | U- | .0070 | Yes | |
| Arsenogoyazite | 1.64 | 1.64 | U | .0000 | No | |
| Jeremejevite # | 1.64 ε | 1.653 ω | U- | .0130 | No | |
| Reidite ! | 1.64 ω | 1.655 ε | U+ | .0150 | Yes | |
| Belovite-(Ce) # | 1.64 ε | 1.66 ω | U- | .0200 | No | |
| IMA2003-019 ! | 1.64 ω | 1.663 ε | U+ | .0230 | No | |
| Pyrosmalite-(Mn) # | 1.64 ε | 1.68 ω | U- | .0400 | Yes | |
| Pyrosmalite-(Fe) | 1.64 ε | 1.68 ω | U- | .0400 | No | |
| Oneillite ! | 1.6406 ε | 1.645 ω | U- | .0044 | No | |
| Bandylite # | 1.641 | 1.691 | U | .0500 | No | |
| Spangolite # | 1.641 ε | 1.694 ω | U- | .0530 | Yes | none |
| Chantalite | 1.642 ε | 1.653 ω | U- | .0110 | No | |
| Carlosruizite | 1.642 ε | 1.655 ω | U- | .0130 | No | |
| Foitite ! | 1.642 ε | 1.664 ω | U- | .0220 | Yes | |
| Apatite-(CaOH) # | 1.644 ε | 1.651 ω | U- | .0070 | No | |
| Tristramite | 1.644 ω | 1.664 ε | U+ | .0200 | No | |
| Komkovite | 1.644 ε | 1.671 ω | U- | .0270 | No | |
| Cualstibite | 1.644 ε | 1.672 ω | U- | .0280 | Yes | |
| Dioptase # | 1.644 to 1.658 ω | 1.697 to 1.709 ε | U+ | .0530 | No | |
| Arsenogorceixite ! | 1.645 ε | 1.645 ω | U- | .0000 | No | |
| Claraite | 1.645 ε | 1.751 ω | U- | .1060 | Yes | r > v strong |
| Braitschite-(Ce) | 1.646 ω | 1.647 ε | U+ | .0010 | No | |
| Lemanskiite ! | 1.647 ε | 1.749 ω | U- | .1020 | Yes | |
| Wickenburgite | 1.648 ε | 1.6918 ω | U- | .0438 | Yes | |
| Ellestadite-(Cl) | 1.649 to 1.65 ε | 1.652 to 1.655 ω | U- | .0030 to .0050 | No | |
| Harkerite # | 1.649 to 1.653 | 1.649 to 1.653 | U | .0000 | Yes | |
| Ellestadite-(OH) | 1.65 ε | 1.654 ω | U- | .0040 | No | |
| Ellestadite-(F) | 1.65 ε | 1.655 ω | U- | .0050 | No | |
| Uvite ! | 1.65 ε | 1.67 ω | U- | .0200 | Yes | |
| Kambaldaite | 1.65 ω | 1.69 ε | U+ | .0400 | Yes | |
| Reevesite | 1.65 ε | 1.735 ω | U- | .0850 | No | |
| Zhangpeishanite ! | 1.652 ε | 1.656 ω | U- | .0040 | No | |
| Tienshanite | 1.653 ε | 1.666 ω | U- | .0130 | No | |
| Plumbogummite # | 1.653 ω | 1.675 ε | U+ | .0220 | Yes | none |
| Ellenbergerite | 1.6538 to 1.6697 ε | 1.6553 to 1.6789 ω | U- | .0015 to .0092 | No | |
| Phenakite # | 1.654 ω | 1.67 ε | U+ | .0160 | No | |
| Rhabdophane-(La) | 1.654 ω | 1.703 ε | U+ | .0490 | No | |
| Johnsomervilleite | 1.655 ε-ω | 1.655 ε-ω | U-+ | .0000 | No | |
| Fermorite # | 1.655 ε | 1.66 ω | U- | .0050 | No | |
| Sincosite # | 1.655 ε | 1.68 ω | U- | .0250 | Yes | |
| Buergerite ! | 1.655 ε | 1.735 ω | U- | .0800 | No | |
| Sterlinghillite | 1.656 ε | 1.671 ω | U- | .0150 | No | |
| Kosnarite | 1.656 ω | 1.682 ε | U+ | .0260 | No | |
| Despujolsite | 1.656 ω | 1.682 ε | U+ | .0260 | No | |
| Simonkolleite | 1.657 ω | 1.7 ε | U+ | .0430 | No | |
| Gehlenite # | 1.66 ε | 1.67 ω | U- | .0100 | No | |
| Deloneite-(Ce) ! | 1.66 ε | 1.682 ω | U- | .0220 | Yes | |
| Grayite # | 1.66 | 1.69 | U | .0300 | No | |
| Nordenskioldine # | 1.66 ε | 1.778 ω | U- | .1180 | No | |
| Steenstrupine-(Ce) # | 1.66 to 1.663 ε | 1.665 to 1.668 ω | U- | .0050 | Yes | |
| Hardystonite # | 1.661 ε | 1.672 ω | U- | .0110 | No | |
| Cahnite # | 1.662 ω | 1.663 ε | U+ | .0010 | No | |
| Rontgenite-(Ce) # | 1.662 ω | 1.756 ε | U+ | .0940 | No | |
| Diaoyudaoite | 1.663 ε | 1.6876 ω | U- | .0246 | No | |
| Gugiaite | 1.664 ω | 1.672 ε | U+ | .0080 | No | |
| Petersite-(Y) | 1.666 ω | 1.747 ε | U+ | .0810 | Yes | |
| Apatite-(CaCl) # | 1.6675 ε | 1.675 ω | U- | .0075 | Yes | none |
| Trembathite | 1.668 ε | 1.684 ω | U- | .0160 | No | |
| Feruvite ! | 1.669 ε | 1.687 ω | U- | .0180 | No | |
| Kuannersuite-(Ce) ! | 1.669 ε | 1.694 ω | U- | .0250 | No | anomalously biaxial, r >v |
| Orpheite | 1.67 ω | 1.691 ε | U+ | .0210 | Yes | |
| Okayamalite ! | 1.67 ε | 1.7 ω | U- | .0300 | Yes | |
| Hinsdalite # | 1.67 to 1.671 ω | 1.689 to 1.7 ε | U+ | .0190 to .0290 | Yes | |
| Fillowite # | 1.671 ω | 1.676 ε | U+ | .0050 | No | |
| Thorbastnasite | ω | 1.67 to 1.678 ε | U+ | No | ||
| Verplanckite | 1.672 ε | 1.683 ω | U- | .0110 | Yes | |
| Qaqarssukite-(Ce) ! | 1.672 ω | 1.751 ε | U+ | .0790 | Yes | |
| Pabstite | 1.674 ε | 1.685 ω | U- | .0110 | Yes | |
| Calciopetersite ! | 1.674 ω | 1.739 to 1.75 ε | U+ | .0650 to .0760 | Yes | |
| Synchysite-(Ce) # | 1.674 ω | 1.77 ε | U+ | .0960 | No | |
| Bazirite | 1.6751 to 1.6813 ω | 1.685 to 1.691 ε | U+ | .0099 | No | |
| Parisite-(Ce) # | 1.676 ω | 1.757 ε | U+ | .0810 | No | |
| Schallerite # | 1.679 ε | 1.704 ω | U- | .0250 | No |