A: Acicular / Aggregates / Air bubbles / Alteration / Anhedral /
B: Banding / Birds-eye / Blasenblende / Botryoidal / Burnishing /
C: Caries / Cement / Chalcopyrite disease / Chimney / Cleavage / Collomorphic / Cruciform / Cubic / Curved deformation twins /
D: Dendritic / Detrital / Discoid /
E: Etching / Euhedral / Exsolution / Exsolution lamellae /
F: Feathers / Flakes / Flames / Fractures / Framboids /
G: Growth Zones /
I: Ice flowers / Inclusions / Intergrowths / Interstitial /
K: Kink banding /
L: Lamellae / Laths / Lobate /
M: Marienberg cross / Microfractures /
N: Needles /
O: Ooids / Organic structure / Oxidation-Exsolution /
P: Pisoliths / Plucking / Polishing Pits / Pore spaces / Pressure lamellae / Pseudomorphs /
R: Radiating aggregates / Replacement / Rhombic / Rims /
S: Scratches / Seriate / Shattering / Sheaves / Skeletal / Spindle / Splinters / Spongy / Stars / Striations / Subhedral / Symplectite /
T: Trellis / Trigonal / Tripple junctions / Twinning /
V: Vein / Veinlet / Vugh /
Z: Zoning /





Acicular

Ilmenite, haematite and TiO2 minerals. Derbyshire, Britain

Arsenopyrite, galena, sphalerite, chalcopyrite, molybdenite and rutile. Mount Pleasant, New Brunswick, Canada



Aggregates

Pyrite, chalcopyrite, bornite and haematite. Aarja, Oman

Pyrite, sphalerite, covelline, galena and chalcopyrite. Parys Mountain, Britain



Air bubbles

Native gold and platinum-iron alloy. Kalimantan, Indonesia

Pentlandite, pyrrhotite, pyrite and chalcopyrite. Bushveld, Republic of South Africa



Alteration

Altered pentlandite, pyrite, pyrrhotite, chalcopyrite and spinel. Kambalda, Western Australia

Covelline, haematite, bornite, digenite and wittichenite. English Lake District, Britain

Haemoilmenite, ilmenohaematite and rutile. Allard Lake, Quebec, Canada

Pyrrhotite, violarite and altered pyrrhotite. Kambalda, Australia



Anhedral

Sphene, magnetite and ilmenite. Glen Gairn, Scotland



Banding

Djurleite and cerussite. Alderley Edge, Cheshire, Britain

Platinum-iron alloy, native gold, osmium-iridium-platinum alloy and osmium-iridium alloy. Kalimantan, Indonesia

Pyrite, jamesonite, sphalerite and galena. Ireland

Pyrite, sphalerite and galena. Ireland

Sphalerite and gersdorffite. Nenthead, North Pennines, Britain

Sphalerite, pyrite and jamesonite. Ireland

Uraninite, chalcocite, bornite and chalcopyrite. Gortdrum, Ireland



Birds-eye

Sphalerite, pyrite, chalcopyrite and arsenopyrite. Nigadoo River, New Brunswick, Canada



Blasenblende

Uraninite and chalcopyrite. Port Radium, Northwest Territories, Canada

Uraninite, carbonaceous matter and chalcopyrite. Port Radium, Northwest Territories, Canada



Botryoidal

Cassiterite. Botallack Mine, Cornwall, Britain

Niccolite, native silver, acanthite and maucherite. Great Bear Lake, Canada

Pyrite and marcasite. Galapagos Mound, Pacific Ocean

Sphalerite and galena. Shullsburg, Wisconsin, USA

Sphalerite, galena and pyrite. Navan, Ireland

Sphalerite, pyrite and chalcopyrite. Aarja, Oman

Uraninite and chalcopyrite. Port Radium, Northwest Territories, Canada

Uraninite and chalcopyrite. Port Radium, Northwest Territories, Canada

Uraninite, galena and chalcopyrite. Tyndrum, Scotland



Burnishing

Magnetite, bornite, valleriite and chalcocite. Palabora, Republic of South Africa



Caries

Galena, cerussite and anglesite. South Pennines, Britain



Cement

Chalcopyrite, sphalerite and covelline. Alderley Edge, Cheshire, Britain

Chalcopyrite, sphalerite, galena and covelline. Alderley Edge, Cheshire, Britain



Chalcopyrite disease

Pyrite, arsenopyrite, sphalerite and chalcopyrite. English Lake District, Britain

Pyrite, chalcopyrite, sphalerite, covelline and galena. Parys Mountain, Britain

Sphalerite, chalcopyrite, pyrite, galena and covelline. Parys Mountain, Britain

Sphalerite, chalcopyrite, pyrrhotite and galena. Great Gossan Lead, Virginia, USA

Sphalerite, pyrite and chalcopyrite. Bayda, Oman

Sphalerite, stannite, chalcopyrite, marcasite and galena. Nigadoo River, New Brunswick, Canada



Chimney

Bornite, sphalerite, chalcocite, pyrite and chalcopyrite. East Pacific Rise, Pacific Ocean

Chalcopyrite, bornite. chalcocite. East Pacific Rise, Pacific Ocean

Chalcopyrite, sphalerite, bornite, pyrite and covelline. East Pacific Rise, Pacific Ocean

Pyrite and sphalerite. East Pacific Rise, Pacific Ocean

Pyrite, sphalerite and chalcopyrite. East Pacific Rise, Pacific Ocean

Sphalerite, chalcopyrite and pyrrhotite. East Pacific Rise, Pacific Ocean



Cleavage

Chalcopyrite, pyrrhotite, pentlandite and cubanite. Stillwater, Montana, USA

Chalcopyrite, pyrrhotite, pentlandite and cubanite. Stillwater, Montana, USA

Chromite. The Great Dyke, Zimbabwe

Galena, sphalerite, chalcopyrite and pyrite. Parys Mountain, Britain

Ilmenite, sphene, haematite and epidote. Glen Gairn, Scotland

Pentlandite, chromite, nickel arsenide, ferrichromit and heazlewoodite. Unst, Shetland Isles, Britain

Pentlandite, pyrrhotite, pyrite and chalcopyrite. Bushveld, Republic of South Africa

Pyrrhotite, pentlandite, pyrite and chalcopyrite. Kambalda, Western Australia



Cleavage (curved)

Sphalerite, pyrrhotite and galena. Unknown Provenance



Cleavage (triangular cleavage pits)

Galena and bournonite. Navan, Ireland

Galena, sphalerite and covelline. Alderley Edge, Cheshire, Britain

Galena, sphalerite, chalcopyrite and pyrite. Parys Mountain, Britain



Collomorphic

Birnessite/todorokite, uncharacterized iron and manganese hydroxides. Pacific Ocean

Birnessite/todorokite, uncharacterized iron and manganese hydroxides. Pacific Ocean

Chalcopyrite, pyrite and sphalerite. Neves-Corvo, Portugal



Cruciform

Haematite, oxidized magnetite and chalcopyrite. Derbyshire, Britain



Cubic

Chromite, chalcopyrite and rutile. Bushveld, Republic of South Africa



Curved deformation twins

Bornite, chalcopyrite and valleriite. Palabora, Republic of South Africa



Dendritic

Rammelsbergite. Great Bear Lake, Canada



Detrital

Pyrite. Vaal Reef, Witwatersrand, Republic of South Africa



Discoid

Haemoilmenite, ilmenohaematite and rutile. Allard Lake, Quebec, Canada



Etching

Monoclinic pyrrhotite, hexagonal pyrrhotite, magnetite, chalcopyrite and pentlandite. Strathcona Mine, Sudbury, Ontario, Canada



Euhedral

Arsenopyrite, chalcopyrite, cassiterite, sphalerite, stannite group minerals and covelline. Devon, Britain

Arsenopyrite, galena, sphalerite, chalcopyrite, molybdenite and rutile. Mount Pleasant, New Brunswick, Canada

Cassiterite and wolframite. Glen Gairn, Scotland

Cassiterite, arsenopyrite, tennantite, sphalerite, chalcopyrite and covelline. Mount Pleasant, New Brunswick, Canada

Cassiterite, wolframite and zircon. Glen Gairn, Scotland

Chromite, chalcopyrite and rutile. Bushveld, Republic of South Africa

Ilmenite, haematite and TiO2 minerals. Derbyshire, Britain

Magnetite and haematite. France

Magnetite, ilmenite and haematite. New Zealand

Magnetite, ilmenite, TiO2 minerals and haematite. Derbyshire, Britain

Magnetite, molybdenite, pyrite and chalcopyrite. Newry, County Down, Britain

Wolframite and cassiterite. Glen Gairn, Scotland



Exsolution

Haemoilmenite, ilmenohaematite and rutile. Allard Lake, Quebec, Canada

Haemoilmenite, ilmenohaematite and rutile. Allard Lake, Quebec, Canada

Haemoilmenite, ilmenohaematite and rutile. Allard Lake. Quebec, Canada

Haemoilmenite. Allard Lake, Quebec, Canada

Ilmenite, sphene, haematite and epidote. Glen Gairn, Scotland

Ilmenite, sphene, pyrite, limonite and haematite. Glen Gairn, Scotland

Ilmenohaematite and haematite. Arran, Britain

Magnetite, pyrite, haematite, pyrrhotite, ilmenite and spinel. St Peter Port gabbro. Guernsey, Channel Islands, Britain



Exsolution lamellae

Chalcopyrite, pyrrhotite, cubanite and pentlandite. Stillwater. Montana, USA



Feathers

Ilmenite, spinel and iron-nickel alloy. Apollo 17, Lunar Sample 70176



Flakes

Graphite. Strontian, Scotland

Magnetite, iron, haematite and limonite. Scotland



Flames

Chalcopyrite, pyrrhotite, cubanite and pentlandite. Stillwater. Montana, USA

Chalcopyrite, pyrrhotite, pentlandite and cubanite. Stillwater, Montana, USA

Chalcopyrite, pyrrhotite, pentlandite and cubanite. Stillwater, Montana, USA

Pyrite, marcasite, violarite and pentlandite. Bushveld, Republic of South Africa

Pyrrhotite and pentlandite. Kambalda, Western Australia

Pyrrhotite, pentlandite and chalcopyrite. Bushveld, Republic of South Africa

Pyrrhotite, pentlandite and chalcopyrite. Stillwater, Montana, USA



Fractures

Chromite and magnetite. Unst, Shetland Islands, Britain

Heazlewoodite, millerite, nickel arsenide. Unst, Shetland Islands, Britain

Heazlewoodite, pentlandite, magnetite and native copper. Unst, Shetland Islands, Britain

Pyrrhotite and pentlandite. Kambalda, Western Australia

Sphalerite, chalcopyrite, pyrite, galena and covelline. Parys Mountain, Britain

Spinel. Calton Hill, Derbyshire, Britain

Uraninite, chalcocite, bornite and chalcopyrite. Gortdrum, Ireland



Framboids

Chalcopyrite, tetrahedrite, pyrargyrite and pyrite. Sark's Hope Mine, Sark, Channel Islands, Britain

Pyrite and sphalerite. Cornwall, Britain

Pyrite and zircon. Vaal Reef, Witwatersrand, Republic of South Africa

Sphalerite, chalcopyrite and pyrite. Aarja, Oman



Growth Zones

Pyrite, marcasite and sphalerite. Galapagos Mound, Pacific Ocean

Pyrite, native gold and galena. Clogau Mine, Wales, Britain

Pyrite, sphalerite and galena. Ireland

Sphalerite and gersdorffite. Nenthead, North Pennines, Britain

Sphalerite, pyrite and chalcopyrite. Bayda, Oman



Ice flowers

Niccolite and sphalerite. Settlingstones Mine, North Pennines, Britain



Inclusions

Bornite, magnetite, chalcopyrite, valleriite, TiO2 mineral and ulvospinel. Palabora, Republic of South Africa

Cassiterite, wolframite and zircon. Glen Gairn, Scotland

Chalcopyrite, pentlandite and altered pentlandite. Palabora, Republic of South Africa

Chalcopyrite, sphalerite, pyrite and marcasite. Jersey, Channel Islands, Britain

Chromite, ulvospinel and iron-nickel alloy. Apollo 12, Lunar Sample 11998

Galena and bournonite. Navan, Ireland

Magnetite, molybdenite, pyrite and chalcopyrite. Newry, County Down, Britain

Pyrite, chalcopyrite and covelline. El Salvador, Chile

Pyrite, magnetite, chalcopyrite, pyrrhotite and covelline. El Salvador, Chile

Sphalerite, chalcopyrite, covelline, galena and stannite. Rishi, Nigeria

Sphalerite, chalcopyrite, galena, tetrahedrite and pyrite. Ainai Mine, Akita Prefecture, Japan

Tellurobismutite and hessite. Clogau Mine, Wales, Britain

Tellurobismutite, tetradymite and galena. Clogau Mine, Wales, Britain

Uraninite, galena and chalcopyrite. Tyndrum, Scotland



Intergrowths

Bornite and chalcocite. Gortdrum, Ireland

Cassiterite and molybdenite. Glen Gairn, Scotland

Chalcopyrite, pyrite, sphalerite and stannite. Neves-Corvo, Portugal

Cubanite, chalcopyrite, pyrrhotite, magnetite and pyrite. Bushveld, Republic of South Africa

Digenite, bornite and covelline. Mount Gabriel, County Cork, Ireland

Galena, cobaltite, tetradymite and pyrrhotite. Clogau Mine, Wales, Britain

Galena, sphalerite and pyrite. Shullsburg, Wisconsin, USA

Heazlewoodite, pentlandite, magnetite and native copper. Unst, Shetland Islands, Britain

Ilmenite, magnetite, TiO2 minerals and maghaemite. Clee Hills, Shropshire, Britain

Ilmenite, sphene, pyrite, limonite and haematite. Glen Gairn, Scotland

Magnetite, ilmenite and haematite. Clee Hills, Shropshire, Britain

Magnetite, molybdenite, pyrite and chalcopyrite. Newry, County Down, Britain

Pentlandite, chalcopyrite, pyrite and pyrrhotite. Merensky Reef. Bushveld, Republic of South Africa

Pentlandite, pyrrhotite, pyrite and chalcopyrite. Bushveld, Republic of South Africa

Pentlandite, pyrrhotite, pyrite and chalcopyrite. Bushveld, Republic of South Africa

Pyrite, bornite, haematite and covelline. Cornwall, Britain

Pyrite, chalcopyrite, spinel, altered pentlandite and native gold. Kambalda, Western Australia

Pyrite, chalcopyrite, tetrahedrite group mineral, sphalerite and arsenopyrite. Neves-Corvo, Portugal

Pyrrhotite, altered pyrrhotite, chalcopyrite, violarite and pentlandite. Bushveld, Republic of South Africa

Pyrrhotite, pentlandite, pyrite and chalcopyrite. Kambalda, Western Australia



Interstitial

Chromite, pentlandite, violarite and rutile. Bushveld, Republic of South Africa



Kink banding

Molybdenite. Jersey, Channel Islands, Britain



Lamellae

Bornite, chalcopyrite and chalcocite. Jersey, Channel Islands. Britain

Cubanite, chalcopyrite, pyrrhotite, magnetite and pyrite. Bushveld, Republic of South Africa

Ilmenite, magnetite, maghaemite and TiO2 minerals. Clee Hills, Shropshire, Britain

Magnetite and ilmenite. Derbyshire, Britain

Pyrrhotite, sphalerite, chalcopyrite and graphite. Great Gossan Lead, Virginia, USA



Laths

Arsenopyrite and native bismuth. Cornwall, Britain

Bornite, chalcopyrite and altered pentlandite. Palabora, Republic of South Africa

Chromite, chalcopyrite and rutile. Bushveld, Republic of South Africa

Haematite. Devon, Britain

Haemoilmenite, ilmenohaematite and rutile. Allard Lake, Quebec, Canada

Haemoilmenite, ilmenohaematite and rutile. Allard Lake, Quebec, Canada

Ilmenite, spinel and haematite. Derbyshire, Britain

Ilmenite, TiO2-rich minerals and haematite. Derbyshire, Britain

Magnetite, molybdenite, pyrite and chalcopyrite. Newry, County Down, Britain

Marcasite, sphalerite, pyrite and galena. Nigadoo River, New Brunswick, Canada

Molybdenite. Henderson Mine, Colorado, USA

Molybdenite. Jersey, Channel Islands, Britain

Pyrite, graphite and marcasite. Strontian, Scotland



Lobate

Ilmenite, magnetite, maghaemite and TiO2 minerals. Clee Hills, Shropshire, Britain

Ilmenite, magnetite, TiO2 minerals and maghaemite. Clee Hills, Shropshire, Britain



Marienberg cross

Niccolite, native silver, maucherite, acanthite and safflorite. Great Bear Lake, Canada



Microfractures

Chromite, ferritchromit and pentlandite. Unst. Shetland Islands, Britain



Needles

Chromite, pentlandite, violarite and rutile. Bushveld, Republic of South Africa



Ooids

Haematite, chamosite and limonite. Egypt

Haematite, chamosite and limonite. Egypt

Haematite, chamosite and limonite. Egypt



Organic structure

Pyrite and sphalerite. East Pacific Rise, Pacific Ocean

Pyrite, sphalerite and chalcopyrite. East Pacific Rise, Pacific Ocean



Oxidation-Exsolution

Magnetite, ilmenite and haematite. Clee Hills, Shropshire, Britain

Magnetite, ilmenite, TiO2 minerals and haematite. Guernsey, Channel Islands, Britain



Pisoliths

Gibbsite, boehmite and haematite. Gove, Northern Territories, Australia



Plucking

llmenite and haematite. Kimberlite pipe. Unknown Provenance

Sphalerite, chalcopyrite, galena and pyrite. Rishi, Nigeria



Polishing Pits

Chalcopyrite, bornite, cassiterite, chalcocite and stannite group mineral. Wheal Jane, Cornwall, Britain

Chromite, chalcopyrite and rutile. Bushveld, Republic of South Africa

Columbite, pyrite and zircon. Ririwai, Nigeria

Digenite, bornite, wittichenite, haematite, covelline and chalcopyrite. English Lake District, Britain

Galena, sphalerite, chalcopyrite, aikinite and stannite. Dawa, Nigeria

Marcasite, pyrite and sphalerite. Ashover, South Pennines, Britain

Pentlandite, chalcopyrite, pyrite and pyrrhotite. Merensky Reef. Bushveld, Republic of South Africa

Pentlandite, pyrrhotite, pyrite and chalcopyrite. Bushveld, Republic of South Africa

Pyrrhotite, magnetite, pentlandite and chalcopyrite. Strathcona Mine, Sudbury, Ontario, Canada

Pyrrhotite, pentlandite, pyrite and chalcopyrite. Kambalda, Western Australia



Pore spaces

Djurleite and bornite. Mount Gabriel, County Cork, Ireland



Pressure lamellae

Stibnite. Unknown Provenance



Pseudomorphs

Haematite and TiO2 minerals. St Bees Sandstone. Cumbria, Britain

Haematite, oxidized magnetite and chalcopyrite. Derbyshire, Britain

Haematite, TiO2 minerals and zircon. St Bees Sandstone. Cumbria, Britain

Ilmenite, haematite and TiO2 minerals. Derbyshire, Britain



Radiating aggregates

Galena and sphalerite. Shullsburg, Wisconsin, USA



Replacement

Blaubleibender covelline, covelline, digenite and bornite. Mount Gabriel, County Cork, Ireland

Bornite, chalcopyrite and valleriite. Palabora, Republic of South Africa

Bornite, pyrite and chalcopyrite. Aarja, Oman

Covelline, bornite, haematite, wittichenite and arsenopyrite. English Lake District, Britain

Digenite, bornite, haematite and chalcopyrite. English Lake District, Britain

Galena, sphalerite and pyrite. Shullsburg, Wisconsin, USA

Haematite. Little Broken Hill, Australia

Pyrite, chalcopyrite, spinel, altered pentlandite and native gold. Kambalda, Western Australia

Pyrite, marcasite, galena and sphalerite. Shullsburg, Wisconsin, USA

Sphalerite, pyrite and chalcopyrite. Bayda, Oman

TiO2 minerals and sphene. Central Wales, Britain

Uraninite, chalcocite, bornite and chalcopyrite. Gortdrum, Ireland

Wolframite and scheelite. Glen Gairn, Scotland



Rhombic

Pyrite, marcasite, wolframite, arsenopyrite, molybdenite, rutile and cassiterite. Mount Pleasant, New Brunswick, Canada

Sphene, magnetite and ilmenite. Glen Gairn, Scotland



Rims

Chalcopyrite, bornite, cassiterite, chalcocite and stannite group mineral. Wheal Jane, Cornwall, Britain

Chalcopyrite, bornite, chalcocite, haematite and cassiterite. Wheal Jane, Cornwall, Britain

Chalcopyrite, pyrite, stannite group mineral, arsenopyrite and covelline. Wheal Jane, Cornwall, Britain

Galena, chalcopyrite, tetrahedrite and covelline. Clevedon, Somerset, Britain

Pyrrhotite, violarite and altered pyrrhotite. Kambalda, Australia

Sphalerite, chalcopyrite, bournonite and tetrahedrite group. Broken Hill, New South Wales, Australia

Sphalerite, tetrahedrite group, bournonite, chalcopyrite and galena. Broken Hill, New South Wales, Australia



Scratches

Galena, native gold and pyrrhotite. Clogau Mine, Wales, Britain

Haemoilmenite. Allard Lake, Quebec, Canada

Native gold and zircon. Kalimantan, Indonesia

Sphalerite, native gold, pyrrhotite and chalcopyrite. Pamour Mine, Ontario, Canada



Seriate

Haemoilmenite, ilmenohaematite and rutile. Allard Lake, Quebec, Canada



Shattering

Chalcopyrite, pyrite, chrome-rich spinel, magnetite, altered pentlandite and violarite. Kambalda, Western Australia



Sheaves

Digenite and covelline. Mount Gabriel, County Cork, Ireland



Skeletal

Altered magnetite and anatase. Derbyshire, Britain

Haematite, oxidized magnetite and chalcopyrite. Derbyshire, Britain



Spindle

Bornite, chalcopyrite, magnetite and TiO2, mineral. Palabora, Republic of South Africa



Splinters

Magnetite, iron, haematite and limonite. Scotland



Spongy

Chromite, ferritchromit, sperrylite and pentlandite. Unst, Shetland Islands, Britain

Chromite, pentlandite, heazlewoodite, millerite and ferritchromit. Unst, Shetland Islands, Britain

Native gold and zircon. Kalimantan, Indonesia

Native gold and zircon. Kalimantan, Indonesia

Native gold. Kalimantan, Indonesia

Pentlandite, chromite, nickel arsenide, ferrichromit and heazlewoodite. Unst, Shetland Isles, Britain



Stars

Chalcopyrite, sphalerite and pyrite. Jersey, Channel Islands, Britain

Pyrite, sphalerite, chalcopyrite, galena and limonite. Jersey, Channel Islands, Britain

Sphalerite, chalcopyrite, covelline, galena and stannite. Rishi, Nigeria



Striations

Platinum-iron alloy, native gold, osmium-iridium-platinum alloy and osmium-iridium alloy. Kalimantan, Indonesia



Subhedral

Bornite, chalcopyrite and altered pentlandite. Palabora, Republic of South Africa

Chromite, ulvospinel and iron-nickel alloy. Apollo 12, Lunar Sample 11997

Ilmenite, sphene, haematite and epidote. Glen Gairn, Scotland

Magnetite, ilmenite, TiO2 minerals and haematite. Derbyshire, Britain

Pyrite, arsenopyrite, sphalerite, marcasite, wolframite and rutile. Mount Pleasant, New Brunswick, Canada



Symplectite

Bornite, stromeyerite, chalcocite, pyrite and tetrahedrite group mineral. Unknown Provenance

Chalcocite, bornite and pyrite. Levant Mine, Cornwall, Britain

Chalcocite, bornite and TiO2 mineral. Gortdrum, Ireland

Magnetite, bornite, valleriite and chalcocite. Palabora, Republic of South Africa

Magnetite, ilmenite and chalcopyrite. Derbyshire, Britain

Spinel. Calton Hill, Derbyshire, Britain

Stromeyerite, bornite, galena, chalcocite and tetrahedrite group mineral and pyrite. Unknown Provenance



Trellis

TiO2 minerals and sphene. Central Wales, Britain



Trigonal

Bornite, chalcopyrite and valleriite. Palabora, Republic of South Africa



Tripple junctions

Pyrrhotite, sphalerite, chalcopyrite and galena. Unknown Provenance



Twinning

Bornite, chalcopyrite, magnetite and TiO2, mineral. Palabora, Republic of South Africa

Cassiterite and zircon. Ririwai, Nigeria

Haematite and magnetite. Skye, Scotland

Haemoilmenite. Allard Lake, Quebec, Canada

Heazlewoodite, millerite and nickel arsenide. Unst. Shetland Islands, Britain

Marcasite. Ashover, South Pennines, Britain

Rutile. Richards Bay, Republic of South Africa

Wolframite and cassiterite. Glen Gairn, Scotland



Vein

Sphalerite, chalcopyrite, stannite and galena. Rishi, Nigeria



Veinlet

Magnetite, calcian rhodochrosite, limonite and chalcopyrite. Harlech Dome, Wales, Britain

Magnetite, limonite, psilomelane and calcian rhodochrosite. Harlech Dome, Wales, Britain

Molybdenite. Henderson Mine, Colorado, USA



Vugh

Siderite, pyrite and marcasite. Great Oakley, Britain



Zoning

Cassiterite and wolframite. Glen Gairn, Scotland

Chalcopyrite, pyrite, chrome-rich spinel, magnetite, altered pentlandite and violarite. Kambalda, Western Australia

Nickeliferous marcasite and bravoite. Oxclose Mine, South Pennines, Britain

Pentlandite, pyrite, chrome-rich spinel, magnetite and chalcopyrite. Kambalda, Western Australia