Iron oxide/hydroxide
Fe(O,OH)x
—
Limonite , Bernalite , Goethite , Iron(II) oxide , Ferrihydrite , Iron(III) oxide , Iron(II,III) oxide , Feroxyhyte , Maghemite , Iron(II) hydroxide , Lepidocrocite
1
0
Reflectance
Group , Informal
Iron(I) phosphide
Fe3 P
—
Schreibersite
0
1
CL
Synthetic, Compound , Phosphide
Iron(II) hydroxide
Fe(OH)2
Iron oxide/hydroxide
Amakinite
1
0
IR
Hydroxide, Compound
Jadeite
NaAlSi2 O6
Clinopyroxene
—
Open
Jadeite vase, Qing dynasty, China, 1700s. British Museum
©
Photo by Vassil on wikimedia.org, Public Domain
23
2
CL, CL/SEM
Mineral, Aluminosilicate
Jarosite
KFeIII 3 (SO4 )2 (OH)6
Minerals containing SO4 , Minerals containing OH
—
Open
Jarosite from Jaroso Ravine, Sierra Almagrera, Cuevas de Almanzora, Almería, Andalusia, Spain. Picture width 2 mm. Collection and photograph Christian Rewitzer.
©
(C) 2010 Christian Rewitzer (via Wikimedia Commons) CC-BY-SA-3.0
6
0
Reflectance
Hydroxide , Mineral, Sulphate
Jimboite
MnII 3 (BO3 )2
Minerals containing BO3
—
Open
Jimboite exhibited at the Mining Museum of Akita University
©
Photo by 掬茶, via Wikimedia Commons, CC-BY-SA-4.0
1
0
PL
Mineral, Borate
K feldspar
KAlSi3 O8
Alkali feldspar
Orthoclase , Adularia , Microcline
Open
Orthoclase specimen (27x17cm), from Minas Gerais, Southeast Region, Brazil
©
Photo by Didier Descouens (via Wikimedia Commons), CC-BY-SA 4.0
6
3
CL, EDS
Aluminosilicate , Silicate, Group , Informal
Kaliborite
KHMg2 B12 O16 (OH)10 ·4H2 O
Minerals containing H2O , Minerals containing OH
—
1
0
PL
Hydroxide , Mineral, Hydrated , Borate
Kaolinite
Al2 Si2 O5 (OH)4
Kaolinite (subgroup) , Minerals containing OH
—
Open
Powder white kaolinite and calcite in a blue-grey Keokuk geode, from St. Francisville, Clark Co., Missouri, USA
©
Photo by John Krygier (http://www.mindat.org/user-13767.html#0), Public Domain
17
1
Reflectance
Hydroxide , Mineral, Aluminosilicate
Kaolinite (subgroup)
Al2 Si2 O5 (OH)4
Kaolinite-Serpentine Group
Nacrite , Kaolinite , Halloysite , Dickite
9
0
Reflectance
Hydroxide, Aluminosilicate , Subgroup
Kapitsaite-(Y)
Ba4 Y2 Si8 B4 O28 F
Hyalotekite (group)
—
6
0
PL
Mineral , REE, Borosilicate
Keldyshite
Na2-x Hx ZrSi2 O7 ·n (H2 O)
Minerals containing H2O
—
1
0
PL/XL
Mineral, Silicate , Hydrated
Khibinskite
K2 ZrSi2 O7
—
—
3
0
PL
Mineral, Silicate
Kratochvílite
(C6 H4 )2 CH2
—
—
1
0
PL
Mineral, Organic
Kunzite
LiAlSi2 O6
Spodumene
—
Open
Kunzite specimen from the Konar Valley, Nuristan, Afghanistan. Size: 13.5x11.8cm
©
2009 Didier Descouens (via Wikimedia Commons), CC-BY-SA-3.0
3
1
CL/SEM
Silicate , Variety