Cerussite and Dundasite
| ID | 452 | |
|---|---|---|
| Mineral |
Cerussite
Dundasite |
|
| Location | Daoping Mine - Guilin - Guangxi - China | |
| Fluorescence | LW-UV: close SW-UV: close |
|
| Mindat.org |
View Cerussite information at mindat.org View Dundasite information at mindat.org |
|
Mindat data
| ID | 934 |
|---|---|
| Long ID | 1:1:934:4 |
| Formula |
Pb(CO3)
|
| IMA Status |
0 1 |
| Other Occurrences | Commonly occurs in the upper oxidized zones of base metal deposits, especially lead-silver deposits. |
| Industrial | Ore of lead, and often also of silver. |
| Diapheny | Transparent,Translucent |
| Cleavage | On {110} and {021} distinct; on {010} and {012} in traces. |
| Tenacity | very brittle |
| Colour | Colourless, white, gray, blue, or green; colourless in transmitted light |
| Hardness (min) | 3.0 |
| Hardness (max) | 3.5 |
| Luminescence | None |
| Lustre | Adamantine |
| About the name | Named in 1845 by Wilhelm Karl von Haidinger from the Latin, cerussa, meaning "white lead." |
| Streak | White |
| Crystal System | Orthorhombic |
| Cleavage Type | Distinct/Good |
| Fracture type | Conchoidal |
| Morphology |
Crystal morphology extremely varied. Simple crystals often tabular {010} and elongated [001] or [100]. Also equant or dipyramidal and then pseudo-hexagonal. Rarely acicular [001] or very thin tabular {001}. {010} and {0kl} usually striated [100]; {111} often striated |
| Twinning | Almost universal. Most commonly on {110}, as twin lamellae or as contact twin types producing stellate pseudo-hexagonal groups or reticulated aggregates. On {130} less common, mainly as contact twins with a heart-shaped outline. Both laws may occur simultaneously. |
| UV | Occasionally fluorescent under SW and MW UV lights showing a yellow color. Yellow/white under SW UV light, but less intense. |
| Thermal Behaviour | Breaks down to a basic carbonate at about 300°, which, in turn, decomposes to PbO at about 500° (?). According to Grisafe & White (1964) cerussite decomposes: - at ca. 204 °C, according to reaction: 3PbCO3 ⇌ 2Pb2O(CO3) + CO2 Further reactions: - at ca. 283 °C: 2Pb3O(CO3)2 ⇌ 3Pb2O(CO3) + CO2 - at 373 °C: 3Pb2O(CO3)⇌ 2Pb3O2(CO3) + CO2 - at 435 °C: Pb3O2(CO3) ⇌ 3PbO + CO2 |
| key_elements |
0 |
| shortcode_ima | Cer |
| Group | Aragonite Group |
| ID | 1330 |
|---|---|
| Long ID | 1:1:1330:3 |
| Formula |
PbAl2(CO3)2(OH)4 · H2O
|
| IMA Status |
0 1 |
| Other Occurrences | Oxidized zones of lead-bearing deposits. |
| Discovery Year | 1893 |
| Diapheny | Transparent |
| Cleavage | On {010}. |
| Colour | White to colourless to very pale blue; rarely pale greenish or pale yellowish |
| Hardness (min) | 2.0 |
| Hardness (max) | 2.0 |
| About the name | Named in 1893 by William Frederick Petterd after the type locality, Dundas, Tasmania, Australia. |
| Streak | White |
| Crystal System | Orthorhombic |
| Cleavage Type | Perfect |
| Morphology | Spherical aggregates composed of radiating crystals, elongated [001]; matted or felted crusts. |
| Publication Year | 1893 |
| key_elements |
0 |
| shortcode_ima | Dun |
| Group | Dresserite Group |
Details
Price: € 15
Dimensions: Not registered
Weight: Not registered
Visibile in overview:
Notes:
| Symbol | Element | |
|---|---|---|
| Al | Aluminium | |
| C | Carbon | |
| H | Hydrogen | |
| O | Oxygen | |
| Pb | Lead |
|