| General Information |
|---|
| Chemical Formula | Michael O’Donoghue, Gems, Sixth Edition (2006) More from other references |
|---|
| Physical Properties of Rhodochrosite |
|---|
| Mohs Hardness | 4Walter Schumann, Gemstones of the world (2001) More from other references |
|---|
| Specific Gravity | 3.45 to 3.70Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
|---|
| Tenacity | BrittleArthur Thomas, Gemstones (2009) |
|---|
| Cleavage Quality | PerfectHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
|---|
| Fracture | Uneven,ConchoidalWalter Schumann, Gemstones of the world (2001) |
|---|
| Optical Properties of Rhodochrosite |
|---|
| Refractive Index | 1.578 to 1.820Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
|---|
| Optical Character | Uniaxial/-Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
|---|
| Birefringence | 0.208 to 0.220Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
|---|
| Pleochroism | Distinct: pinkish-red - colorless/light pinkHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
|---|
| Dispersion | 0.015Walter Schumann, Gemstones of the world (2001) More from other references |
|---|
| Colour |
|---|
| Colour (General) | Pinkish to redHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
|---|
| Causes of Colour | Pink to red, Mn2+ in octahedral coordination, with minor Fe2+ Mn3+ in octahedral coordinationW. William Hanneman, Pragmatic Spectroscopy For Gemologists (2011) |
|---|
| Transparency | TransparentHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
|---|
| Lustre | Vitreous,ResinousArthur Thomas, Gemstones (2009) |
|---|
| Fluorescence & other light emissions |
|---|
| Fluorescence (General) | Under both forms of UV there is a pink response from the mineral as a whole though individual specimens may not show much.Michael O’Donoghue, Gems, Sixth Edition (2006) |
|---|
| Fluorescence (Long-Wave UV) | Inert to yellowHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
|---|
| Crystallography of Rhodochrosite |
|---|
| Crystal System | TrigonalHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
|---|
| Habit | Commonly aggregates with botryoidal formsUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
|---|
| Geological Environment |
|---|
| Where found: | Rhodochrosite occurs as a primary mineral in low- to moderate-temperature hydrothermal veins, also in metamorphic deposits and in carbonatites.Michael O’Donoghue, Gems, Sixth Edition (2006) |
| Further Information |
|---|
| Mineral information: | Rhodochrosite information at mindat.org |
|---|
| Significant Gem Localities |
|---|
| Argentina | | |
| Saadi and Grasso (1992) | |
| Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 443 | | China | | |
| | | Japan | | |
| Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 443 | | Myanmar | | |
| Ted Themelis (2008) Gems & mines of Mogok | |
| Ted Themelis (2008) Gems & mines of Mogok | | Peru | | |
| | |
| | |
| Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 443 | |
| | |
| | |
| | |
| | | South Africa | |
- John Taolo Gaetsewe District Municipality
- Joe Morolong Local Municipality
| Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 443 | |
| Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 443 | |
| Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 443 | | USA | | |
| Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 443 |
|
|