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  2. Collectible minerals
  3. Realgar

Collectible minerals - full range in stock "Realgar"

Realgar is an uncommon mineral of low-temperature hydrothermal origin. Accompanies lead, gold and silver ores. Arsenic in the composition of realgar forms a stable chemical compound, starting to be released only when heated above three hundred degrees Celsius.
You can see realgar stone for sale and buy it in the Minerals of Russia online store.

 Physical properties of Realgar

General
Category Sulfide mineral
Formula
(repeating unit)		 As4S4 or AsS
IMA symbol Rlg
Strunz classification 2.FA.15a
Crystal system Monoclinic
Crystal class Prismatic (2/m)
(same H-M symbol)
Space group P21/n (no. 14)
Unit cell a = 9.325(3) Å
b = 13.571(5) Å
c = 6.587(3) Å
β = 106.43°; Z = 16
Identification
Color Red to yellow-orange; in polished section, pale gray, with abundant yellow to red internal reflections
Crystal habit Prismatic striated crystals; more commonly massive, coarse to fine granular, or as incrustations
Twinning Contact twins on {100}
Cleavage Good on {010}; less so on {101}, {100}, {120}, and {110}
Tenacity Sectile, slightly brittle
Mohs scale hardness 1.5–2
Luster Resinous to greasy
Streak Red-orange to red
Diaphaneity Transparent
Specific gravity 3.56
Optical properties Biaxial (-)
Refractive index nα = 2.538
nβ = 2.684
nγ = 2.704
Birefringence δ = 0.166
Pleochroism Nearly colorless to pale golden yellow
2V angle 40°
Dispersion r > v, very strong
Other characteristics Toxic and carcinogenic. Disintegrates on long exposure to light to a powder composed of pararealgar or arsenolite and orpiment.
Realgar, Orpiment
Code: 4847
Realgar, Orpiment
Sukhonkoe, Altai, RF
18*15*5mm

0.00 $ $13.33

Realgar
Code: 4561
Realgar
Sukhonkoe, Altai, RF
31*17*6mm

0.00 $ $19.67

Antimonite, Realgar
Code: 4540
Antimonite, Realgar
Kadamzhai, Kyrgyzstan
63*55*48mm

0.00 $ $183.33

Realgar, Orpiment
Code: 4231
Realgar, Orpiment
Sukhonkoe, Altai, RF
28*21*4mm

0.00 $ $19.33

Realgar
Code: 4229
Realgar
Sukhonkoe, Altai, RF
38*34*16mm

0.00 $ $65.67

Realgar
Code: 1284
Realgar
Sukhonkoe, Altai, RF
78*49*19mm

0.00 $ $236.67

Realgar
Code: 1285
Realgar
Sukhonkoe, Altai, RF
70*35*15mm

0.00 $ $106.67

Realgar archived
Code: 4578
Realgar
Sukhonkoe, Altai, RF
7*9*5mm

0.00 $ $6.67

Realgar archived
Code: 4381
Realgar
Sukhonkoe, Altai, RF
31*17*8mm

0.00 $ $23.00

Realgar archived
Code: 4230
Realgar
Sukhonkoe, Altai, RF
31*21*5mm

0.00 $ $23.00

Realgar archived
Code: 4232
Realgar
Sukhonkoe, Altai, RF
24*21*3mm

0.00 $ $14.33

Realgar, Orpiment archived
Code: 2777
Realgar, Orpiment
Sukhonkoe, Altai, RF
42*16*7mm

0.00 $ $16.33

Realgar archived
Code: 2580
Realgar
Sukhonkoe, Altai, RF
18*17*5mm

0.00 $ $15.00

Realgar archived
Code: 2581
Realgar
Sukhonkoe, Altai, RF
23*15*4mm

0.00 $ $15.00

Realgar archived
Code: 2469
Realgar
Sukhonkoe, Altai, RF
33*18*10mm

0.00 $ $22.67

Realgar archived
Code: 2470
Realgar
Sukhonkoe, Altai, RF
23*12*17mm

0.00 $ $15.00

Realgar archived
Code: 2471
Realgar
Sukhonkoe, Altai, RF
24*16*5mm

0.00 $ $15.00

Realgar archived
Code: 913
Realgar
Sukhonkoe, Altai, RF
58*30*7mm

0.00 $ $35.00

Realgar, Orpiment archived
Code: 1286
Realgar, Orpiment
Sukhonkoe, Altai, RF
51*39*17mm

0.00 $ $97.67

Realgar, Orpiment archived
Code: 2031
Realgar, Orpiment
Sukhonkoe, Altai, RF
23*13*8mm

0.00 $ $15.00

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