From YPPedia

Lorandite
Raw goods
Mass: 5.5 kg	Volume: 1 L
Obtained from: Merchant Brigands, Commodities markets
Used by: Iron mongers, Weaveries, Shipyards
End products: Bludgeons, Cloth, Swords

Lorandite is one of eleven minerals. It is an ingredient in bludgeons, swords and cloth.

German article: Lorandit

Spawn Locations

Cobalt	Hunter	Ice	Malachite	Midnight	Sage	Viridian
Crimson Island	Anegada Island	Oubliette Island	Ichor Island* Murex Island* Wyvern Island*	Durian Island* Iris Island Rhinoceros Ridge*	Gauntlet Island	Crimson Island

*Islands without market bidding.

Use

Lorandite is needed in the production of:

Iron monger products

Cleaver (3)

Long sword (2)

Scimitar (3)

Shipyard products

Cane (1)

Chain (2)

Gauntlets (3)

Weavery products

Purple cloth (1)

Fine purple cloth (2)

Real World Counterpart

Lorandite is made from the elements Thallium, Arsenic, and Sulfur, by the chemical formula TlAsS₂. This is based on the data from http://webminerals.com