Examples of metamorphic rocks include anthracite, quartzite, marble, slate, granulite, gneiss and schist. Anthracite is a type of coal with a high carbon count, few impurities and with a high luster (meaning it looks shiny). Marble is a metamorphic rock that is formed from the sedimentary rock limestone.ranulite is a metamorphic rock that is formed from the igneous rock basalt. Learn about sedimentary rocks, igneous rocks, other rocks and minerals or fossils. Make a fossil cast or check out our rock sorting lesson plan.
Typically, the IRS can come after your business for failing to report income for up to 6 years after your filing if the amount is greater than 25% of your businessâs gross income. If you filed for a deduction for a bad debt or worthless security, the IRS suggests you keep your supporting tax records for 7 years. Under these circumstances, you may generally wish to retain your supportive records for at least 7 years. Employment Tax Records.
How long should I keep my deceased family memberâs income tax records? As a rule, the Canada Revenue Agency (CRA) recommends that taxpayers retain a copy of their completed return (including receipts and supporting documents) for a minimum of six years once it has been filed.