Macphersonite, a new mineral from Leadhills, Scotland, and Saint-Prix, France— a polymorph of leadhillite and susannite

  title={Macphersonite, a new mineral from Leadhills, Scotland, and Saint-Prix, France— a polymorph of leadhillite and susannite},
  author={Alec Livingstone and Halil Sarp},
  journal={Mineralogical Magazine},
  pages={277 - 282}
Abstract Macphersonite is white, resinous to adamantine, hardness (Mohs) 2½−3, density 6.50–6.55 gm/cm3 and possesses a perfect cleavage on {010}. Optically it is negative with 2Vα 35–36°, α = 1.87, β = 2.00 and γ = 2.01, α = b, γ = c, and γ = a, dispersion r > v. Polysynthetic twinning, with either coarse or fine lamellae, is common, as are contact twins. Crystals are orthorhombic, tabular on b with a 10.37, b 23.10 and c 9.25 Å, cell volume 2215.8 Å3 and space group Pcab; Z is 8 formula units… 

Mattheddleite, a new mineral of the apatite group from Leadhills, Strathclyde Region

Synopsis Mattheddleite, a new lead member of the apatite group with sulphur and silicon totally replacing phosphorus, occurs as tiny crystals (<0.1 mm) forming drusy cavities in specimens from

Crystal structure of macphersonite (Pb4SO4(CO3)2(OH)2): comparison with leadhillite

Abstract The crystal structure of macphersonite (Pb4SO4(CO3)2(OH)2, Pcab, a = 9.242(2), b = 23.050(5), c = 10.383(2) Å) from Leadhills, Scotland has been determined to an R = 0.053. The structure has

The missing sulphur in mattheddleite, sulphur analysis of sulphates, and paragenetic relations at Leadhills, Scotland

Abstract Published electron microprobe analyses of mattheddleite, a lead sulpho-silicate apatite from Leadhills, Scotland, have 9−13% IV site deficiencies. However, galena was used as a standard for

Hydrocerussite-related minerals and materials: structural principles, chemical variations and infrared spectroscopy.

The results of the infrared (IR) spectroscopy show that this method is useful for distinguishing several different minerals related to hydrocerussite and their synthetic analogues.

Structural changes accompanying the phase transformation between leadhillite and susannite: A structural study by means of in situ high-temperature single-crystal X-ray diffraction

Abstract To study the temperature-dependent structural changes accompanying the phase transformation leadhillite ↔ susannite and to verify the close structural relationships between heated

Structural Variations in Carbonates

There has been considerable recent interest in the stabilities of carbonate minerals within the Earth. Calcite is the dominant C-bearing phase in the Earth’s crust, and acts as a buffer for the

Thermal reactions of leadhillite Pb4SO4(CO3)2(OH)2

Abstract Reactions undergone by leadhillite from the type locality on heating to 1000°C have been followed by DTA, TG, DSC, evolved gas analysis, continuous-heating XRD and IR, and hot-stage

Thermal decomposition ractions of caledonite and their products

Abstract The thermal decomposition of caledonite has been examined by simultaneous differential thermal analysis, thermogravimetry and mass spectrometry. Structural H2O and CO2 are liberated

Raman spectroscopy of lead sulphate-carbonate minerals : implications for hydrogen bonding

The Raman spectrum of the basic carbonate-sulphate minerals known as leadhillite, susannite and caledonite have been measured and the spectra compared with the Raman spectra of cerussite,