A-Z register
- Jadeite NaAlSi2O6
- Jasper SiO₂
- Jasrouxite Ag1+16Pb2+4(Sb3+25As3+15)S2-72
- Javorieite KFe2+Cl3
- Jentschite Pb2+Tl1+As3+2Sb3+S2-6
- Jeppeite (K,Ba)2(Ti4+,Fe3+)6O13
- Joëlbruggerite Pb2+3Zn2+3Sb5+As5+2O13(OH)
- Joesmithite Pb2+Ca2Mg3Fe3+2(Si6Be2)O22(OH)2
- Johanngeorgenstadtite Ni2+4.5(As5+O4)3
- Johillerite NaCu2+MgMg2(As5+O4)3
- Johnsenite-(Ce) Na12Ce3+3Ca6Mn2+3Zr4+3W6+Si25O73(CO3)(OH)2
- Jonassonite Au(Bi,Pb)5S4
- Jordanite Pb2+14As3+6S2-23
- Juansilvaite Na5Al3[As5+O3(OH)]4[As5+O2(OH)2]2(S6+O4)2·4H2O
- Julgoldite-(Fe^3+^) Ca2Fe3+Fe3+2(Si2O7)(SiO4)O(OH)·H2O
- Julgoldite-(Mg) Ca2MgFe3+2(Si2O7)(SiO4)(OH)·H2O
- Junitoite CaZn2+2Si2O7·H2O