R60 Standard shipping applies to orders under R100, in most areas in South Africa. R30 Standard shipping applies to orders over R100. Some areas may attract a R30 surcharge. This will be calculated at checkout if applicable. Check my rate
Free collection from
Schoemansville, Hartbeespoort
The seller allows collection for this item and will be in contact with the full collection address once the order is ready.
Ready for collection by Tuesday, 14 May.
Ready to ship in
The seller has indicated that they will usually have this item
ready to ship within 1 business day. Shipping time depends on your delivery address. The most
accurate delivery time will be calculated at checkout, but in
general, the following shipping times apply:
Chiastolite is a variety of the mineral andalusite with the chemical composition Al2SiO5. It is noted for distinctive cross-shaped black inclusions of graphite. In areas around Georgetown, California, metamorphosed sediments contained andalusite and chiastolite in a graphite rich metasediment. The chiastolite crystals have been pseudomorphically altered by a mixture of muscovite, paragonite and margarite. The calcium rich margarite tends to form along the graphite rich crosses or bands within the chiastolite. Mineralogically the occurrence is important because all three white mica phases are present in an equilibrium assemblage.