orthorhombic
120 minerals — Crystal system
abuite
CaAl2(PO4)2F2
achyrophanite
(K,Na)3(Fe^3⁺,Ti,Al,Mg)5O2(AsO4)5
◇
acmonidesite
(NH4,K,Pb)8NaFe^2⁺4(SO4)5Cl8
adamite
Zn2AsO4(OH)
adelite
CaMgAsO4(OH)
◇
aeschynite-(Ce)
Ce(TiNb)O6
aeschynite-(Y)
Y(TiNb)O6
agrinierite
K2Ca[(UO2)3O3(OH)2]2·5H2O
aguilarite
Ag4SeS
aksaite
MgB6O7(OH)6·2H2O
alcantarillaite
aldermanite
Mg5Al12(PO4)8(OH)22·32H2O
◇
allabogdanite
(Fe,Ni)2P
alpeite
Ca4Mn^3⁺2Al2(Mn^3⁺Mg)(SiO4)2(Si3O10)(V5+O4)(OH)6
althausite
Mg4(PO4)2(OH,O)(F,☐)
ammineite
CuCl2·2NH3
analcime
Na(AlSi2O6)·H2O
andalusite
Al2SiO5
anglesite
PbSO4
anhydrite
CaSO4
anilite
Cu7S4
anthophyllite
☐Mg2Mg5Si8O22(OH)2
aragonite
CaCO3
arcanite
K2[SO4]
arcubisite
Ag6CuBiS4
argyrodite
Ag8GeS6
armalcolite
(Mg,Fe^2⁺)Ti2O5
arsendescloizite
◇
arsenoclasite
arsenuranospathite
Al(UO2)2(AsO4)2F·20H2O
atacamite
Cu2Cl(OH)3
athabascaite
Cu5Se4
attikaite
Ca3Cu2Al2(AsO4)4(OH)4·2H2O
austinite
CaZnAsO4(OH)
autunite
Ca(UO2)2(PO4)2·(10-12)H2O
avogadrite
KBF4
azoproite
Mg2[(Ti,Mg),Fe^3⁺]O2BO3
banalsite
Na2BaAl4Si4O16
barrerite
Na2(Si7Al2)O18·6H2O
baryte
BaSO4
bavenite
Ca4Be2₊ₓAl2₋ₓSi9O26₋ₓ(OH)2₊ₓ (x=0 to 1)
becquerelite
Ca(UO2)6O4(OH)6·8(H2O)
berthierite
FeSb2S4
bertrandite
Be4Si2O7(OH)2
◇
bezsmertnovite
billietite
bismuthinite
Bi2S3
bismutite
Bi2O2(CO3)
◇
blossite
bonaccordite
Ni2Fe^3⁺O2(BO3)
boracite
Mg3B7O13Cl
bornite
Cu5FeS4
bournonite
CuPbSbS3
bowieite
brassite
Mg(AsO3OH)·4H2O
◇
bridgmanite
MgSiO3
brookite
TiO2
brownmillerite
Ca2(Al,Fe^3⁺)2O5
cabriite
Pd2CuSn
calciborite
CaB2O4
caledonite
Cu2Pb5(SO4)3(CO3)(OH)6
canfieldite
Ag8SnS6
capgaronnite
AgHgClS
carmeltazite
ZrAl2Ti4O11
carnallite
KMgCl3·6H2O
carpholite
Mn^2⁺Al2(Si2O6)(OH)4
cavansite
celestine
SrSO4
cervantite
Sb^3⁺Sb^5⁺O4
chalcostibite
CuSbS2
chambersite
Mn3B7O13Cl
chanabayaite
Cu2Cl(N3C2H2)2(NH3,Cl,H2O,☐)4
chesterite
Mg17Si20O54(OH)6
childrenite
Fe^2⁺AlPO4(OH)2·H2O
◇
chlorocalcite
KCaCl3
chrysoberyl
BeAl2O4
chrysocolla
Cu2₋ₓAlₓ(H2₋ₓSi2O5)(OH)4 · nH2O
cobaltite
CoAsS
cohenite
Fe3C
◇
colimaite
K3VS4
conichalcite
CaCuAsO4(OH)
cordierite
Mg2Al4Si5O18
cornetite
Cu3PO4(OH)3
cotunnite
PbCl2
cowlesite
Ca(Al2Si3)O10·(5-6)H2O
cubanite
CuFe2S3
◇
cupalite
CuAl
curite
Pb3(UO2)8O8(OH)6 * 3H2O
cyanotrichite
Cu4Al2SO4(OH)12·2H2O
danburite
CaB2Si2O8
danielsite
(Cu,Ag)14HgS8
dawsonite
NaAl(CO3)(OH)2
descloizite
PbZn(VO4)(OH)
dimorphite
As4S3
dresserite
Ba2Al4(CO3)4(OH)8·3H2O
duftite
PbCuAsO4(OH)
dumortierite
AlAl6BSi3O18
dundasite
PbAl2(CO3)2(OH)4·H2O
◇
dyrnaesite-(La)
Na8Ce^4⁺(La,REE)2(PO4)6
dyscrasite
Ag3₊ₓSb1₋ₓ (x~0.2)
edingtonite
Ba(Si3Al2)O10·4H2O
◇
elaliite
(Fe^2⁺8Fe^3⁺)(PO4)O8
empressite
AgTe
enargite
Cu3AsS4
enstatite
Mg2Si2O6
epsomite
MgSO4·7H2O
euchroite
Cu2AsO4(OH)·3H2O
euxenite-(Y)
(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
evenkite
C23H48
falcondoite
Ni4Si6O15(OH)2·6H2O
fayalite
Fe^2⁺2SiO4
◇
fermiite
Na4(UO2)(SO4)3·3H2O
ferrimolybdite
Fe^3⁺2(Mo^6⁺O4)3·7H2O
ferro-gedrite
☐{Fe^2⁺2}{Fe^2⁺3Al2}(Al2Si6O22)(OH)2
fluellite
Al2(PO4)F2(OH)(H2O)3·4H2O
fluorwavellite
Al3(PO4)2(OH)2F*5H2O
forsterite
Mg2SiO4
fourmarierite
Pb(UO2)4O3(OH)4·4H2O
francevillite
Ba(UO2)2(VO4)2·5H2O
gedrite
☐Mg2Mg3Al2(Si6Al2)O22(OH)2