<prompt> Groote Eylandt syndrome is due to the toxicity of:-ManganeseMagnesiumThalliumAntimony  <response>: Clinical Features of manganese toxicity Acute manganese poisoning is extremely rare. Chronic exposure to manganese dust or fumes results in the following: Dyspnoea, bronchitis, pneumonia. The manganese miners on an Australian island Groote Eylandt have been repoed to be afflicted with a peculiar neurological disease characterised by upper motor neuron and cerebellar signs, and oculomotor symptoms Angurugu syndrome or Groote Eylandt syndrome. Parkinson-like syndrome manganism--tremor, rigidity, ataxia, amnesia, and abnormal gait. In addition, there may be nystagmus, paraesthesia, whispering speech, lumbosacral pain, urinary incontinence, impotence, etc. Manganese madness Locura manganica--insomnia, confusion, anxiety, hallucinations, and bizarre behaviour. Metal fume fever has been repoed after inhalation exposure to manganese oxide fumes 