Minerals

ALBITE (NaAlSi3O8)
Class: silicate
Rarity: Very Common Crystal:  crystal with a massive lamellar granular  habit Opalescent
Colour: colorless white gray green ;   Streak: colorless ;   Lustre: vitreous pearly ;   Transparency: transparent translucent subtranslucent ;
Tenacity: brittle ;   Cleavage: perfect imperfect ;   Fracture: conchoidal even uneven ;  
Hardness - between 6 and: 7;   Density - between 2.59 and: 2.63
Dana number: 545


AMBER
Class: organic (see "more information" below for details)
Hardness - between 0 and: 10;   Density - between 0 and: 24


ARKOSE
Class: sedimentary rock (see "more information" below for details)


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AUGITE ((Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)2O6)
Class: silicate
Rarity: Very Common Crystal:  crystal with a massive fibrous columnar granular fine coarse habit Magnetic after heating
Colour: white green black;   Streak: white green;   Lustre: vitreous resinous pearly;   Transparency: translucent opaque;
Tenacity: brittle;   Cleavage: perfect interrupted;   Fracture: conchoidal uneven;  
Hardness - between 5 and: 6.5;   Density - between 3.2 and: 3.6
Dana number: 555


AZURITE (Cu3(CO3)2(OH)2)
Class: carbonate
Rarity: Rare Crystal:  crystal with a massive columnar habit 
Colour: blue;   Streak: blue;   Lustre: vitreous adamantine;   Transparency: transparent subtranslucent;
Tenacity: brittle;   Cleavage: perfect imperfect;   Fracture: conchoidal;  
Hardness - between 3.5 and: 4;   Density - between 3.77 and: 3.89
Dana number: 528


BASALT
Class: igneous rock (see "more information" below for details)


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BIOTITE (K(Mg,Fe)3(Al,Fe)Si3O10(OH,F)2)
Class: silicate
Rarity: Very Common Crystal:  crystal with a massive habit 
Colour: green black red yellow white;   Streak: colorless;   Lustre: submetallic pearly;   Transparency: transparent translucent opaque;
Tenacity: flexible;   Cleavage: perfect;   Fracture: unknown;  
Hardness - between 2.5 and: 3;   Density - between 2.7 and: 3.1
Dana number: 663


CALCITE (Ca(CO3))
Class: carbonate
Rarity: Very Common Crystal:  crystal with a massive fibrous granular stalactitic habit Fluorescent
Colour: white colorless gray red green blue yellow brown;   Streak: white gray;   Lustre: vitreous earthy;   Transparency: transparent translucent opaque; Cleavage: perfect;   Fracture: conchoidal;  
Hardness - between 3 and: 3;   Density - between 2.71 and: 3
Dana number: 512


CHALCOPYRITE (CuFeS2)
Class: sulphide
Rarity: Very Common Crystal:  crystal with a massive botryoidal reniform habit Magnetic after heating
Colour: yellow;   Streak: black;   Lustre: metallic;   Transparency: opaque;
Tenacity: brittle;   Cleavage: distinct;   Fracture: uneven;  
Hardness - between 3.5 and: 4;   Density - between 4.1 and: 4.3
Dana number: 431


CHRYSOBERYL (BeAl2O4)
Class: oxide
Rarity: Very Rare Crystal:  crystal with a unknown habit Opalescent
Colour: green white brown yellow red;   Streak: none;   Lustre: vitreous;   Transparency: transparent translucent;
Tenacity: brittle;   Cleavage: distinct imperfect;   Fracture: uneven conchoidal;  
Hardness - between 8.5 and: 8.5;   Density - between 3.5 and: 3.84
Dana number: 494


CHRYSOCOLLA ((Cu,Al)2H2Si2O5(OH)4.n(H2O))
Class: silicate
Rarity: Rare Crystal:  crystal with a cryptocrystalline botryoidal habit 
Colour: green blue;   Streak: white;   Lustre: vitreous;   Transparency: translucent opaque;
Tenacity: sectile brittle;   Cleavage: none;   Fracture: conchoidal;  
Hardness - between 2.4 and: 2.4;   Density - between 2 and: 2.24
Dana number: 686


COAL
Class: sedimentary rock (see "more information" below for details)


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CONGLOMERATE
Class: sedimentary rock (see "more information" below for details)


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COPPER (Cu)
Class: element
Rarity: Common Crystal:  crystal with a massive pseudomorph habit 
Colour: red;   Streak: red;   Lustre: metallic;   Transparency: opaque;
Tenacity: malleable;   Cleavage: none;   Fracture: hackly;  
Hardness - between 2.5 and: 3;   Density - between 8.8 and: 8.9
Dana number: 404


CORUNDUM (Al2O3)
Class: oxide
Rarity: Common Crystal:  crystal with a massive granular habit 
Colour: blue red yellow brown gray white;   Streak: none;   Lustre: adamantine vitreous;   Transparency: transparent translucent;
Tenacity: brittle;   Cleavage: perfect indistinct;   Fracture: uneven conchoidal;  
Hardness - between 9 and: 9;   Density - between 3.95 and: 4.1
Dana number: 481


CROCOITE (PbCrO4)
Class: chromate
Rarity: Very Rare Crystal:  crystal with a columnar granular habit 
Colour: red;   Streak: yellow;   Lustre: adamantine vitreous;   Transparency: translucent;
Tenacity: sectile;   Cleavage: distinct;   Fracture: conchoidal uneven;  
Hardness - between 2.5 and: 3;   Density - between 5.9 and: 6.1
Dana number: 754


DOLOMITE (CaMg(CO3)2)
Class: carbonate
Rarity: Very Common Crystal:  crystal with a granular fine coarse habit 
Colour: white red green brown gray black;   Streak: white;   Lustre: vitreous pearly;   Transparency: transparent translucent;
Tenacity: brittle;   Cleavage: perfect;   Fracture: subconchoidal;  
Hardness - between 3.5 and: 4;   Density - between 2.8 and: 2.9
Dana number: 516


FLUORAPATITE (Ca5 (PO4)3 F)
Class: phosphate, arsenate, vanadate
Rarity: Common Crystal:  crystal with a short or long prismatic and tabular, also masive, glovular and fibrous habit 
Colour: colorless, white, gray, yellow, green, purple, blue, red, brown;   Streak: white;   Lustre: vitreous to subresinous;   Transparency: transparent, translucent; Cleavage: indistinct;   Fracture: conchoidal;  
Hardness - between 5 and: 5;   Density - between 3.1 and: 3.2


FLUORITE (Ca F2)
Class: halide
Rarity: Very Common Crystal:  crystal with a cubes etc, also granular habit 
Colour: intense purple, colorless, green, yellow, blue, pink, reddish orange;   Streak: white;   Lustre: vitreous;   Transparency: transparent, translucent; Cleavage: perfect;   Fracture: conchoidal;  
Hardness - between 4 and: 4;   Density - between 3 and: 3.3


GALENA (PbS)
Class: sulphide
Rarity: Very Common Crystal:  crystal with a massive fine granular coarse granularimpalpable fibrous habit 
Colour: gray;   Streak: gray;   Lustre: metallic;   Transparency: opaque;
Tenacity: brittle;   Cleavage: perfect;   Fracture: subconchoidal even;  
Hardness - between 2.5 and: 2.75;   Density - between 7.4 and: 7.6
Dana number: 416


GARNET ((M1)3 (M2)2 (Si O4)3)
Class: silicate
Rarity: Rare Crystal:  crystal with a various beads,massive,crystals w/12 diamond faces habit 
Colour: violet, red, yellow, green, black, brown;   Streak: white;   Lustre: resinous,vitreous;   Transparency: transparent, translucent, opaque; Cleavage: none;   Fracture: uneven;  
Hardness - between 6 and: 8;   Density - between 3.4 and: 4.2


GNEISS
Class: metamorphic rock (see "more information" below for details)


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GOLD (Au)
Class: element
Rarity: Rare Crystal:  crystal with a reticulated dendritic massive habit 
Colour: yellow white red;   Streak: yellow;   Lustre: metallic;   Transparency: opaque;
Tenacity: malleable;   Cleavage: none;   Fracture: hackly;  
Hardness - between 2.5 and: 3;   Density - between 15.6 and: 19.33
Dana number: 401


GRAPHITE (C)
Class: element
Rarity: Rare Crystal:  crystal with a foliated radiated habit Greasy feel
Colour: gray black;   Streak: black;   Lustre: metallic earthy;   Transparency: opaque;
Tenacity: flexible inelastic;   Cleavage: perfect;   Fracture: unknown;  
Hardness - between 1 and: 2;   Density - between 2.09 and: 2.23
Dana number: 397


GYPSUM (CaSO4.2(H2O))
Class: sulphate
Rarity: Very Common Crystal:  crystal with a foliated massive lamellar stellated granular habit 
Colour: colorless white gray red yellow blue black brown;   Streak: white;   Lustre: pearly subvitreous earthy;   Transparency: transparent translucent opaque; Cleavage: perfect distinct;   Fracture: conchoidal;  
Hardness - between 1.5 and: 2;   Density - between 2.31 and: 2.33
Dana number: 758


HALITE (NaCl)
Class: halide
Rarity: Very Common Crystal:  crystal with a massive granular columnar habit Saline taste
Colour: colorless white yellow red blue;   Streak: white;   Lustre: vitreous;   Transparency: transparent translucent;
Tenacity: brittle;   Cleavage: perfect;   Fracture: conchoidal;  
Hardness - between 2.5 and: 2.5;   Density - between 2.1 and: 2.6
Dana number: 459


HEMATITE (Fe2O3)
Class: oxide
Rarity: Very Common Crystal:  crystal with a columnar granular botryoidal stalactitic habit Magnetic after heating
Colour: gray black red;   Streak: red brown;   Lustre: metallic dull;   Transparency: opaque;
Tenacity: brittle elastic;   Cleavage: none;   Fracture: subconchoidal uneven;  
Hardness - between 5.5 and: 6.5;   Density - between 4.9 and: 5.3
Dana number: 483


HORNBLENDE (Ca(Mg,Fe)3Si4O12)
Class: silicate
Rarity: Very Common Crystal:  crystal with a columnar fibrous massive granular habit Magnetic after heating
Colour: green black;   Streak: colorless white;   Lustre: vitreous pearly silky;   Transparency: translucent opaque;
Tenacity: brittle;   Cleavage: perfect distinct;   Fracture: subconchoidal uneven;  
Hardness - between 5 and: 6;   Density - between 3 and: 3.47
Dana number: 571


JET
Class: organic (see "more information" below for details)
Hardness - between 0 and: 10;   Density - between 0 and: 24


LABRADORITE ((Na,Ca) Al Si3 O8)
Class: silicate
Rarity: Very Common Crystal:  crystal with a tabular, usually massive habit 
Colour: gray, smoky black;   Streak: white;   Lustre: vitreous;   Transparency: translucent, opaque; Cleavage: distinct indistinct;   Fracture: conchoidal;  
Hardness - between 6 and: 6;   Density - between 2.7 and: 2.7


LIMESTONE
Class: sedimentary rock (see "more information" below for details)


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LIMONITE (2Fe2O3.3H2O)
Class: oxide
Rarity: Very Common Crystal:  crystal with a stalactitic botryoidal mammilary fibrous massive habit Magnetic after heating
Colour: brown black;   Streak: brown;   Lustre: silky submetallic earthy;   Transparency: opaque; Cleavage: none;   Fracture: conchoidal;  
Hardness - between 5 and: 5.5;   Density - between 3.6 and: 4
Dana number: 506


MAGNETITE (Fe3O4)
Class: oxide
Rarity: Very Common Crystal:  crystal with a massive granular coarse fine habit Weakly Magnetic
Colour: black;   Streak: black;   Lustre: metallic submetallic;   Transparency: opaque;
Tenacity: brittle;   Cleavage: indistinct;   Fracture: subconchoidal uneven;  
Hardness - between 5.5 and: 6.5;   Density - between 5.17 and: 5.18
Dana number: 491


MALACHITE (Cu2(CO3)(OH)2)
Class: carbonate
Rarity: Very Common Crystal:  crystal with a massive botryoidal stalactitic granular fibrous habit 
Colour: green;   Streak: green;   Lustre: vitreous earthy;   Transparency: translucent subtranslucent opaque;
Tenacity: brittle;   Cleavage: perfect;   Fracture: subconchoidal uneven;  
Hardness - between 3.5 and: 4;   Density - between 3.9 and: 4.03
Dana number: 527


MUDSTONE
Class: sedimentary rock (see "more information" below for details)


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MUSCOVITE (KAl2(Si3Al)O10(OH,F)2)
Class: silicate
Rarity: Very Common Crystal:  crystal with a massive cryptocrystalline habit 
Colour: colorless gray brown green yellow red;   Streak: colorless;   Lustre: vitreous pearly silky;   Transparency: transparent translucent;
Tenacity: flexible;   Cleavage: perfect;   Fracture: uneven;  
Hardness - between 2 and: 2.25;   Density - between 2.76 and: 3
Dana number: 659


OBSIDIAN
Class: non-crystalline (see "more information" below for details)
Hardness - between 0 and: 10;   Density - between 0 and: 24


OLIVINE ((Mg,Fe)2 Si O4)
Class: silicate
Rarity: Very Common Crystal:  crystal with a granular,prismatic, tabular habit 
Colour: yellow-green, yellow-brown;   Streak: colorless, white;   Lustre: vitreous;   Transparency: transparent, translucent; Cleavage: indistinct;   Fracture: conchoidal;  
Hardness - between 6.5 and: 7;   Density - between 3.3 and: 3.3


ORTHOCLASE (KAlSi3O8)
Class: silicate
Rarity: Very Common Crystal:  crystal with a massive granular lamellar habit 
Colour: colorless white yellow red gray green;   Streak: colorless;   Lustre: vitreous pearly;   Transparency: transparent translucent;
Tenacity: brittle;   Cleavage: perfect imperfect;   Fracture: conchoidal uneven;  
Hardness - between 6 and: 6;   Density - between 2.56 and: 2.58
Dana number: 538


PUMICE
Class: igneous rock (see "more information" below for details)


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PYRITE (FeS2)
Class: sulphide
Rarity: Very Common Crystal:  crystal with a massive fine granular radiated reniform globular habit Magnetic after heating
Colour: yellow;   Streak: black;   Lustre: metallic;   Transparency: opaque;
Tenacity: brittle;   Cleavage: indistinct;   Fracture: conchoidal uneven;  
Hardness - between 6 and: 6.5;   Density - between 4.95 and: 5.1
Dana number: 433


QUARTZ (SiO2)
Class: oxide
Rarity: Very Common Crystal:  crystal with a massive granular mammillary stalactitic habit 
Colour: colorless yellow red brown green blue black;   Streak: white;   Lustre: vitreous greasy;   Transparency: transparent translucent opaque;
Tenacity: brittle;   Cleavage: indistinct;   Fracture: conchoidal unveven;  
Hardness - between 7 and: 7;   Density - between 2.65 and: 2.66
Dana number: 470


QUARTZITE
Class: metamorphic rock (see "more information" below for details)


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RHODONITE ((Mn,Fe,Mg,Ca)SiO3)
Class: silicate
Rarity: Very Rare Crystal:  crystal with a large tabular crystals, massive habit 
Colour: red black;   Streak: white;   Lustre: vitreous pearly;   Transparency: transparent translucent;
Tenacity: brittle;   Cleavage: perfect imperfect;   Fracture: conchoidal uneven;  
Hardness - between 5.5 and: 6.5;   Density - between 3.4 and: 3.68
Dana number: 564


RHYOLITE
Class: igneous rock (see "more information" below for details)


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SLATE
Class: metamorphic rock (see "more information" below for details)


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SPHALERITE ((Zn,Fe)S)
Class: sulphide
Rarity: Very Common Crystal:  crystal with a massive fine granular foliated fibrous botryoidal habit 
Colour: yellow brown black red green white colorless;   Streak: brown yellow white;   Lustre: resinous adamantine;   Transparency: translucent transparent;
Tenacity: brittle;   Cleavage: perfect;   Fracture: conchoidal;  
Hardness - between 3.5 and: 4;   Density - between 3.9 and: 4.1
Dana number: 421


SULFUR (S)
Class: element
Rarity: Very Common Crystal:  crystal with a massive reniform stalactitic habit 
Colour: yellow brown gray;   Streak: white;   Lustre: resinous;   Transparency: transparent translucent;
Tenacity: brittle sectile;   Cleavage: imperfect;   Fracture: conchoidal uneven;  
Hardness - between 1.5 and: 2.5;   Density - between 2.05 and: 2.09
Dana number: 398


TALC (Mg3Si4O10(OH)2)
Class: silicate
Rarity: Very Common Crystal:  crystal with a massive globular stellated fibrous cryptocrystalline habit Greasy feel
Colour: green white gray brown;   Streak: white;   Lustre: pearly;   Transparency: subtransparent translucent;
Tenacity: sectile;   Cleavage: perfect;   Fracture: unknown;  
Hardness - between 1 and: 1.5;   Density - between 2.7 and: 2.8
Dana number: 677


TEKTITE
Class: non-crystalline (see "more information" below for details)
Hardness - between 0 and: 10;   Density - between 0 and: 24


TOPAZ (Al2SiO4(F,OH)2)
Class: silicate
Rarity: Very Rare Crystal:  crystal with a striated columnar granular fine coarse habit 
Colour: yellow white gray green blue red;   Streak: colorless;   Lustre: vitreous;   Transparency: transparent subtranslucent;
Tenacity: brittle;   Cleavage: perfect;   Fracture: subconchoidal uneven;  
Hardness - between 8 and: 8;   Density - between 3.4 and: 3.6
Dana number: 613


TOURMALINE (H9Al3(B.OH)2Si4O19)
Class: silicate
Rarity: Very Common Crystal:  crystal with a massive columnar parallel divergent habit 
Colour: black green red blue white colorless;   Streak: colorless;   Lustre: vitreous resinous;   Transparency: transparent translucent opaque;
Tenacity: brittle;   Cleavage: indistinct;   Fracture: subconchoidal uneven;  
Hardness - between 7 and: 7.5;   Density - between 2.98 and: 3.2
Dana number: 634





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