Chinglusuite, Penwithite, Stratospeite, Sturtite, Vittinkite,
also known as Penwithite, is similar in composition to
Serpentine and is an alteration product of Bementite. It is not a scarce mineral
but rarely available as a faceted gem. Neotocite is
always opaque and usually a shade of liver brown.
is found in many locations worldwide including Mitterdorf, Styria, Austria;
Mont Saint-Hilaire, Rouville County, Québec, Canada;
Valgraveglia Mine, Reppia, Graveglia Valley, Ne, Genova Province, Liguria, Italy;
Noda-Tamagawa mine, Iwate Prefecture, Tohoku Region, Honshu Island, Japan;
Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia;
Harstigen Mine, Pajsberg, Filipstad, Värmland, Sweden;
and Franklin, Franklin Mining District, Sussex County, New Jersey, USA.