Северный Стрэдбрук: Остров Минжерриба в заливе Мортон, Квинсленд.

Island that lies within Moreton Bay in the Australian state of Queensland
the locality for a part of the island

North Stradbroke Island (Jandai: Minjerribah), colloquially Straddie or North Straddie, is an island that lies within Moreton Bay in the Australian state of Queensland, southeast of the centre of Brisbane. Originally there was only one Stradbroke Island but in 1896 it split into North Stradbroke Island and South Stradbroke Island separated by the Jumpinpin Channel. The Quandamooka people are the traditional owners of North Stradbroke island. The island is divided into four localities: Dunwich, Amity and Point Lookout are small localities centred on the towns of the same name, while the remainder of the island is in the locality of North Stradbroke Island. All the localities are within the City of Redland. At , it is the second largest sand island in the world. On the island there are three small towns, a number of lakes and beaches along most of the seaward coastline with rocky outcrops at Point Lookout. An Aboriginal presence on the island has been long and ongoing, resulting in a successful native title determination. Tourism is a major and growing industry on the island. The island has been the site for sand mining for more than sixty years. Tourism and currently mining are the island's main industries.

North Stradbroke Island is the second largest sand island in the world. The population of the island at the was 2026, comprising 883 in Dunwich, 678 in Point Lookout, 348 in Amity, and 117 elsewhere on the island. The number of people on the island swells significantly during the holiday season. The island is only accessible by vehicular or passenger ferries leaving from Cleveland. There are three townships on the island. Dunwich is the largest and has most of the island's services including a school, medical centre, local museum and the University of Queensland's Moreton Bay Research Station. Point Lookout (referred to locally as 'the point') is on the surf side of the island and is the major tourist destination in the holiday season. The third is Amity Point which is much smaller and a popular fishing spot on the island. Flinders Beach is a small settlement of mostly holiday houses located on the main beach between Amity and Point Lookout. The whole of the island is part of the Redland City local government area, and is incorporated as part of Division 2. The two largest lakes on the island are Brown Lake and Blue Lake. In January 2014, about 60% of the island's bushland was consumed by bushfires, later to regenerate.

Five main beaches provide fishing, surfing and water opportunities on North Stradbroke Island. These are Main Beach which is long and good for surfing, Cylinder Beach which is a protected swimming beach with a smaller swell, Home Beach which is popular with swimmers, Frenchmans Beach/Deadmans Beach with rock pools but no lifesaving service and Flinders Beach which offers good swimming and beach camping. Main Beach is also the location of the entry to the Keyhole Track, which is one of the top 4WD tracks near Brisbane. The entrance is near Point Lookout to the south.

North Stradbroke Island has over 100 freshwater lakes and wetlands and contains significant groundwater resources which are accessed by local communities and a sand mining company, Australia. In addition, a significant volume of groundwater is exported to the mainland. There is a higher number of wetlands that have been in existence since the last ice age than anywhere else on the Australian mainland. While there is the potential for expanded groundwater use, because so little is known about groundwater dependent water bodies and ecosystems any expanded groundwater use is suspended. Dependent ecosystems include freshwater and estuarine wetlands, mangrove and paperbark communities, and surface water fauna. Many of the wetlands are places for threatened migratory wading birds, including 34 species listed by JAMBA and CAMBA Moreton Bay Ramsar area, Marine, migratory (EPBC Act).

Blue Lake, one of the largest lakes on the island, is protected within the Naree Budjong Djara National Park and is of cultural significance to the Quandamooka people of Stradbroke Island. It is a spring fed lake relying on the stable aquifer feeding it. This stable hydrology means it has been untouched by climate change and appears to be in the same condition as it was 7,500 years ago. Blue Lake has been an important climate 'refuge' for the freshwater biota of the region, and with appropriate management, the lake could continue relatively unchanged for hundreds, possibly thousands of years to come.

The Eighteen Mile Swamp is the largest of its kind in the world and, in particular, is a fine and extensive representation of a coastal freshwater swamp. It is unusual for its size and dimensions (very long and narrow), covering and is considered to be very young (500 6,000 years) compared with similar swamps. On 27 March 2011, the area was declared a national park, named Naree Budjong Djara National Park, My Mother Earth, by the Quandamooka people, the Traditional Owners of Minjerribah (North Stradbroke Island), who are engaged in its joint management with the Queensland State government. The wetland is in close proximity to the extensive Enterprise Mine. The Eighteen Mile Swamp is home to many endangered, rare species, including the vulnerable Cryptocarya foetida whose habitat is the notophyll vine forest found at the foot and lower slope of parabolic high dunes on the west of the wetland.

Another perched lake, Lake Kounpee was partially drained after sand mining operations breached the impervious layer in 1987. CRL spent over $300,000 in the 10 years following this in attempts to fix the damage, and now acknowledge they can not repair the damage to the lake – "turning a clear freshwater lake into a reedy waterhole".

Other perched lakes include Black Snake Lagoon, Ibis lagoon (whose melaleuca community is unique in structure and floristics from other melaleuca areas on the island), The Keyholes are a series of clear, freshwater lakes at the northern end of the 18 Mile Swamp popular with visiting canoeists. As the Yarraman Mine is now operating close to these lakes, public access has been closed, as it is a prohibited mining area.

The Quandamooka people, an Aboriginal Australian people, are made up of the Noonuccal, Goenpul and Ngugi tribes. Quandamooka is the Aboriginal name for Moreton Bay; however North Stradbroke Island is also inhabited by the Quandamooka people. The Federal Court determinations outline native title rights and interest over land and waters on and around North Stradbroke Island. In December 2021, people were not allowed to camp on the island unless they were fully vaccinated against COVID 19 to protect the Indigenous elders living on the island.

In 1949, Australian Consolidated Industries (ACI) commenced sand mining operations on North Stradbroke Island. Consolidated Rutile Limited (CRL), an Australian public company listed on the Australian Stock Exchange, took over these sand mining operations in 1966 and operated two of Stradbroke's three sand mines. CRL sand mined mineral sands. From 2001, the third mine, a silica sand mine, has been operated by Unimin Australia Limited, part of mining multi national SCR Sibelco, a company privately owned by the Belgian Emsens family. In 1998, Iluka Resources Limited, a publicly listed Australian company, acquired majority interest in CRL. Unimin Australia Limited acquired Iluka Resources majority interest in CRL holdings in 2009, and, in December 2010, the company changed its name to Sibelco Australia (after its Belgian parent company). Iluka Resources remains the overseas selling agent for mineral sands from Sibelco Australia's Enterprise and Yarraman mines. Mining began in the 1950s on the beachfront and this caused minimal disruption to the environment. However, as mining moved into the interior of the island in the late 1960s and increased in scale and size in the 1970s, the impact on Stradbroke's ecosystem increased with Consolidated Rutile Limited (CRL) starting dredge mining on Stradbroke's high dunes. There are several accounts from sand mining employees of unusual artifacts being found during dredging operations. Dredge mining involves levelling the high dunes and stripping vegetation to create the dredge pond and this dramatically changed the landscape of Stradbroke. The dredge is continually moving, leaving the tailings sand, so, although the mined dunes are revegetated and stabilised, the original ecology of the Island cannot be replaced. In 1991, the Australian Government and sand mining companies ACI and CRL attempted to reach an agreement on surrender of some or parts of mining lease tenements to form a national park. Half of North Stradbroke Island was to become a national park in return for a guarantee that mining could continue for the life of several mines in high grade areas.1 The agreement was not signed by either of the mining companies nor the Government and has lapsed. Sibelco Australia operated three sand mining sites on the island – Enterprise (by far the largest), Vance and Yarraman. Mineral sands and silica sands at Vance mine, near Dunwich, are mined from the surface. Rutile, zircon and ilmenite were dredged from the Enterprise Mine, southeast of Dunwich (and previously the Yarraman Mine, south of Point Lookout). Enterprise was the largest mine on the island and accounted for 60% of the island's production in 2011. It operated in close proximity to the Eighteen Mile Swamp along a migrating dredge path with a buffer zone from the wetlands prescribed by the Queensland Government. Conservationists have expressed concern that these buffer zones, the smallest of which is , are inadequate to protect the Ramsar listed wetlands from pollution and will fail to protect the waterways, citing evidence from the 1976 inquiry into sandmining on Fraser Island which found even buffer between areas mined and wetlands was "totally inadequate". In 2009, of minerals were being produced by mining about 50 million tonnes of sand. Sibelco Australia produced of sand annually (approximately one per cent of North Stradbroke Island's total sand). The silica extracted was used mainly in glass production, but also in digital tablets such as iPads. The mineral sands were used in paints, plastics, metals, cosmetics and biotechnological devices (such as prosthesis), both for domestic and international markets. A 2010 KPMG assessment, commissioned by Sibelco Australia, found 95% of revenue from NSI sand mining stayed in the Australian community.

In 1991, up to 100,000 litres of diesel spilled from the sand mining company, Consolidated Rutile Limited [CRL] into Amity wetlands. This was not reported until 1994, the same year CRL was awarded a commendation in the inaugural State Government Award for Environmental Excellence. It was not until 1997 that the incident was acknowledged in CRL's Annual Report stating that the spill was expected to be cleared by 1999 – eight years after it occurred. The sand mining company was never fined by the Department of Mines and Energy for these environmental incidents and continues operating. The award is given to a company that demonstrates leadership in environmental practices and commitment to progressive rehabilitation and long term sustainability. At that time (according to the Stradbroke Island Management Organisation [SIMO], an environmental watch dog organisation) two thirds of the island were covered by mining leases. Sibelco appealed, on technical grounds, the Magistrate's decision that it had a case to answer on the criminal charges for the illegal selling of sand. On 22 May 2014, the Court of Appeal heard the appeal and delivered its judgement, all on the same day. It dismissed Sibelco's appeal against criminal proceedings. The final day of this now five year long criminal trial was scheduled for 22 August 2014, in the Warwick Magistrates Court. In 2009 it became public knowledge that the mining leases on North Stradbroke island had also expired for the areas of operation of the Enterprise and Yarraman Mines. This led to the June 2010 announcement by the then Premier Anna Bligh that sand mining on the island would be phased out by 2027 and the mined land and Ramsar listed wetlands would become national park, eventually to cover 80% of the island. This proposal relied on renewing expired mining leases under the Mineral Resources Act. In another legal matter, the High Court of Australia ruled against Sibelco in June 2011 over a bid to sell sand to construction companies. The ensuing public discussion around future land use saw concern expressed by some residents as to the impact on the island's economy. and by conservationists who saw it as sand mining business as usual, as the non renewal of expired leases would effectively end mining around 2014. Conservationists campaigned with the simple message that 2027 was, in fact, the forecast date for the exhaustion of the mineral deposits on NSI as already anticipated by the Enterprise and Yarraman mine operators, citing details from CRL's letter of 13 May 2009 to the Australian Securities Exchange [ASIX] that mineral sand mining as an economic force on the island would end by 2027. Sibelco Australia's commercial interests benefited by continued access to the mineral sand deposits on the expired leases until 2027, and, in 2010, Sibelco Australia commissioned Synergies Economic Consulting to report on the economic effect of an earlier closure of sand mining on NSI. The consultant's report predicted an earlier closure of sand mining would prompt a rise in the price of ferry transport services, electricity services and fuel for the 2000 residents, with total employment on the island anticipated to drop by 30%. The Minister can not renew an expired lease if further mining would be inappropriate having regard to future uses of the land. Since it was last renewed in 1986, parts of ML1117 had been included in the national estate because of its high conservation value, These parties had publicly flagged they would certainly use that right, given the good prospects of overturning the lease renewal decision upon judicial review, and bringing about the cessation of sand mining on the island around 2014. In response to the public debate, and to the very real likelihood that expired mining leases would not be successfully renewed under the Minerals Resources Act if proper regard was given to future land use, on 22 March 2011 then Premier Anna Bligh announced that the Enterprise Mine would continue the operating until 2019, the Yarraman mine would operate until 2015 and the silica mine (Vance) until 2025. The Queensland government would approve sand mining on North Stradbroke Island not through considering an application for renewal of a mining lease under the Mineral Resources Act, but through the passage of a new Act, the Stradbroke Island Sustainability and Protection Act 2011 (NSI Act). This Act was passed in April 2011. The act renewed the key expired Enterprise Mine mining lease ML1117 until 31 December 2019 and also extinguished the pre existing judicial rights of conservationists and Indigenous owners opposed to renewal of the leases. The act also renewed two expired leases to facilitate continued silica sand mining at Vance until 2025. Under the State Government's Stradbroke Island Sustainability and Protection Act 2011, 80% of the island will become national park by 2026. The national park will be jointly managed by the Quandamooka people under the Indigenous land use agreement. The State Government planned to develop tourism opportunities by creating new walking tracks, camping grounds and recreational facilities. Under the 2011 legislation, the Enterprise mine was to close by 2019, and the much smaller Vance mine by 2025. and Sibelco Australia supported his electoral campaign by posting letters to voters by "mine supporters" without required disclosure, urging a vote for Campbell Newman. Sibelco belatedly obtained authorisation and in 2013 filed a disclosure revealing it had spent more than on postage and printing. However, this election promise was not fulfilled, with no restoration of rights to citizens extinguished by the North Stradbroke Island Sustainability Act. Instead, in 2013 the LNP Government passed legislation that allows sand mining on the island for an extra 16 years from 2019 to 2035. The circumstances leading up to this legislative amendment were referred to Queensland's Crime and Misconduct Commission. The public debate concerning sand mining re opened in late 2012 when conservationists and Indigenous traditional owners, the Quandamooka people of NSI, discovered that the Enterprise mine had commenced operation in 2004 without Federal government approval under the Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act). As the Enterprise mine operates in close proximity to the Ramsar protected wetlands, experts had advised that the mine was having significant impact on the adjoining wetland, as water used in the sand mine's operation flows into these protected areas. The wetlands are part of complex hydrological systems forming art of the ancient dunes, some up to 300,000 years old, and the long term impacts on the wetlands are unknown. In August 2013, Friends of Stradbroke Island Inc was preparing to take Sibelco Australia to the Federal Court, as the Federal Government had not taken any steps to enforce Sibelco's compliance with Australian environment protection laws. On 6 June 2014 the Quandamooka people initiated a legal challenge, saying that the LNP Government's extension of mining contravened the Native Title Act 1993 (Cwth). When Labor won office in 2015, the Palaszczuk government returned the end date to 2019.

The Yarraman mine closed in 2015. According to the fund, it "is the largest community investment ever made in the history of the Bay Islands". The fund is administered by an Advisory Board, constituted by two members from each of the island's townships and an executive chairperson. However, no Quandamooka people, who had their native title claim recognised in July 2011, after a 16 year proceeding, are members of the board of this community fund. As at October 2017, there is no reference to the community fund on the Sibelco website.

Arts such as fibre art and basketry and weaving techniques are being taught in workshops by a New Zealand born artist living on the island, and Quandamooka Yoolooburrabee Aboriginal Corporation chief executive Cameron Costello is working to expand the tourism industry based on arts and culture, both Indigenous and non Indigenous. The Quandamooka Festival was part of this, and the Quandamooka Arts Museum and Performance Institute is due to be completed in mid 2021.